Home / 38,708.26-53,419.50-21,717.88

Finding the Fourth Proportional to 38,708.26, 53,419.50 and 21,717.88

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Solution

The fourth proportional to 38,708.26, 53,419.50 and 21,717.88 is: 29,971.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,708.26 : 53,419.50 = 21,717.88 : x
  2. Step 2: Convert to fraction form
    38,708.26/53,419.50 = 21,717.88/x
  3. Step 3: Cross multiply
    38,708.26x = 53,419.50 × 21,717.88
  4. Step 4: Simplify right side
    38,708.26x = 1,160,158,290.66
  5. Step 5: Solve for x
    x = 1,160,158,290.66/38,708.26
  6. Step 6: Final answer
    x = 29,971.85

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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.