Home / 21,553.60-29,751.56-18,214.12

Finding the Fourth Proportional to 21,553.60, 29,751.56 and 18,214.12

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Solution

The fourth proportional to 21,553.60, 29,751.56 and 18,214.12 is: 25,141.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,553.60 : 29,751.56 = 18,214.12 : x
  2. Step 2: Convert to fraction form
    21,553.60/29,751.56 = 18,214.12/x
  3. Step 3: Cross multiply
    21,553.60x = 29,751.56 × 18,214.12
  4. Step 4: Simplify right side
    21,553.60x = 541,898,484.03
  5. Step 5: Solve for x
    x = 541,898,484.03/21,553.60
  6. Step 6: Final answer
    x = 25,141.90

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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.