Home / 22,985.78-31,732.47-15,471.60

Finding the Fourth Proportional to 22,985.78, 31,732.47 and 15,471.60

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Solution

The fourth proportional to 22,985.78, 31,732.47 and 15,471.60 is: 21,358.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,985.78 : 31,732.47 = 15,471.60 : x
  2. Step 2: Convert to fraction form
    22,985.78/31,732.47 = 15,471.60/x
  3. Step 3: Cross multiply
    22,985.78x = 31,732.47 × 15,471.60
  4. Step 4: Simplify right side
    22,985.78x = 490,952,082.85
  5. Step 5: Solve for x
    x = 490,952,082.85/22,985.78
  6. Step 6: Final answer
    x = 21,358.95

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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.