Home / 21,397.60-29,536.11-14,705.38

Finding the Fourth Proportional to 21,397.60, 29,536.11 and 14,705.38

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Solution

The fourth proportional to 21,397.60, 29,536.11 and 14,705.38 is: 20,298.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,397.60 : 29,536.11 = 14,705.38 : x
  2. Step 2: Convert to fraction form
    21,397.60/29,536.11 = 14,705.38/x
  3. Step 3: Cross multiply
    21,397.60x = 29,536.11 × 14,705.38
  4. Step 4: Simplify right side
    21,397.60x = 434,339,721.27
  5. Step 5: Solve for x
    x = 434,339,721.27/21,397.60
  6. Step 6: Final answer
    x = 20,298.53

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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.