Home / 20,228,423.10-30,342,634.65-13,425,978.30

Finding the Fourth Proportional to 20,228,423.10, 30,342,634.65 and 13,425,978.30

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Solution

The fourth proportional to 20,228,423.10, 30,342,634.65 and 13,425,978.30 is: 20,138,967.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,228,423.10 : 30,342,634.65 = 13,425,978.30 : x
  2. Step 2: Convert to fraction form
    20,228,423.10/30,342,634.65 = 13,425,978.30/x
  3. Step 3: Cross multiply
    20,228,423.10x = 30,342,634.65 × 13,425,978.30
  4. Step 4: Simplify right side
    20,228,423.10x = 407,379,554,375,728.12
  5. Step 5: Solve for x
    x = 407,379,554,375,728.12/20,228,423.10
  6. Step 6: Final answer
    x = 20,138,967.45

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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.