Home / 31,613.36-43,575.76-21,401.17

Finding the Fourth Proportional to 31,613.36, 43,575.76 and 21,401.17

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Solution

The fourth proportional to 31,613.36, 43,575.76 and 21,401.17 is: 29,499.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,613.36 : 43,575.76 = 21,401.17 : x
  2. Step 2: Convert to fraction form
    31,613.36/43,575.76 = 21,401.17/x
  3. Step 3: Cross multiply
    31,613.36x = 43,575.76 × 21,401.17
  4. Step 4: Simplify right side
    31,613.36x = 932,572,348.20
  5. Step 5: Solve for x
    x = 932,572,348.20/31,613.36
  6. Step 6: Final answer
    x = 29,499.31

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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.