Home / 25,151.05-34,711.20-15,588.40

Finding the Fourth Proportional to 25,151.05, 34,711.20 and 15,588.40

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Solution

The fourth proportional to 25,151.05, 34,711.20 and 15,588.40 is: 21,513.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,151.05 : 34,711.20 = 15,588.40 : x
  2. Step 2: Convert to fraction form
    25,151.05/34,711.20 = 15,588.40/x
  3. Step 3: Cross multiply
    25,151.05x = 34,711.20 × 15,588.40
  4. Step 4: Simplify right side
    25,151.05x = 541,092,070.08
  5. Step 5: Solve for x
    x = 541,092,070.08/25,151.05
  6. Step 6: Final answer
    x = 21,513.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.