Home / 20,230,829.10-30,346,243.65-13,428,384.30

Finding the Fourth Proportional to 20,230,829.10, 30,346,243.65 and 13,428,384.30

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Solution

The fourth proportional to 20,230,829.10, 30,346,243.65 and 13,428,384.30 is: 20,142,576.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,230,829.10 : 30,346,243.65 = 13,428,384.30 : x
  2. Step 2: Convert to fraction form
    20,230,829.10/30,346,243.65 = 13,428,384.30/x
  3. Step 3: Cross multiply
    20,230,829.10x = 30,346,243.65 × 13,428,384.30
  4. Step 4: Simplify right side
    20,230,829.10x = 407,501,021,793,634.69
  5. Step 5: Solve for x
    x = 407,501,021,793,634.69/20,230,829.10
  6. Step 6: Final answer
    x = 20,142,576.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.