Home / 21,416.78-29,553.18-11,983.52

Finding the Fourth Proportional to 21,416.78, 29,553.18 and 11,983.52

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Solution

The fourth proportional to 21,416.78, 29,553.18 and 11,983.52 is: 16,536.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,416.78 : 29,553.18 = 11,983.52 : x
  2. Step 2: Convert to fraction form
    21,416.78/29,553.18 = 11,983.52/x
  3. Step 3: Cross multiply
    21,416.78x = 29,553.18 × 11,983.52
  4. Step 4: Simplify right side
    21,416.78x = 354,151,123.59
  5. Step 5: Solve for x
    x = 354,151,123.59/21,416.78
  6. Step 6: Final answer
    x = 16,536.15

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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.