Home / 20,148.14-30,221.28-7,001.54

Finding the Fourth Proportional to 20,148.14, 30,221.28 and 7,001.54

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Solution

The fourth proportional to 20,148.14, 30,221.28 and 7,001.54 is: 10,501.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.14 : 30,221.28 = 7,001.54 : x
  2. Step 2: Convert to fraction form
    20,148.14/30,221.28 = 7,001.54/x
  3. Step 3: Cross multiply
    20,148.14x = 30,221.28 × 7,001.54
  4. Step 4: Simplify right side
    20,148.14x = 211,595,349.66
  5. Step 5: Solve for x
    x = 211,595,349.66/20,148.14
  6. Step 6: Final answer
    x = 10,501.98

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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.