Home / 42,610.87-63,930.48-18,915.13

Finding the Fourth Proportional to 42,610.87, 63,930.48 and 18,915.13

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Solution

The fourth proportional to 42,610.87, 63,930.48 and 18,915.13 is: 28,378.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,610.87 : 63,930.48 = 18,915.13 : x
  2. Step 2: Convert to fraction form
    42,610.87/63,930.48 = 18,915.13/x
  3. Step 3: Cross multiply
    42,610.87x = 63,930.48 × 18,915.13
  4. Step 4: Simplify right side
    42,610.87x = 1,209,253,340.16
  5. Step 5: Solve for x
    x = 1,209,253,340.16/42,610.87
  6. Step 6: Final answer
    x = 28,378.99

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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.