Home / 15,139.52-20,898.24-11,192.40

Finding the Fourth Proportional to 15,139.52, 20,898.24 and 11,192.40

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Solution

The fourth proportional to 15,139.52, 20,898.24 and 11,192.40 is: 15,449.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,139.52 : 20,898.24 = 11,192.40 : x
  2. Step 2: Convert to fraction form
    15,139.52/20,898.24 = 11,192.40/x
  3. Step 3: Cross multiply
    15,139.52x = 20,898.24 × 11,192.40
  4. Step 4: Simplify right side
    15,139.52x = 233,901,461.38
  5. Step 5: Solve for x
    x = 233,901,461.38/15,139.52
  6. Step 6: Final answer
    x = 15,449.73

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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.