Home / 38,704.13-53,412.31-21,712.15

Finding the Fourth Proportional to 38,704.13, 53,412.31 and 21,712.15

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Solution

The fourth proportional to 38,704.13, 53,412.31 and 21,712.15 is: 29,963.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,704.13 : 53,412.31 = 21,712.15 : x
  2. Step 2: Convert to fraction form
    38,704.13/53,412.31 = 21,712.15/x
  3. Step 3: Cross multiply
    38,704.13x = 53,412.31 × 21,712.15
  4. Step 4: Simplify right side
    38,704.13x = 1,159,696,086.57
  5. Step 5: Solve for x
    x = 1,159,696,086.57/38,704.13
  6. Step 6: Final answer
    x = 29,963.11

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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.