Home / 20,557.90-28,371.24-11,602.14

Finding the Fourth Proportional to 20,557.90, 28,371.24 and 11,602.14

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Solution

The fourth proportional to 20,557.90, 28,371.24 and 11,602.14 is: 16,011.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,557.90 : 28,371.24 = 11,602.14 : x
  2. Step 2: Convert to fraction form
    20,557.90/28,371.24 = 11,602.14/x
  3. Step 3: Cross multiply
    20,557.90x = 28,371.24 × 11,602.14
  4. Step 4: Simplify right side
    20,557.90x = 329,167,098.45
  5. Step 5: Solve for x
    x = 329,167,098.45/20,557.90
  6. Step 6: Final answer
    x = 16,011.71

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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.