Home / 38,707.26-53,418.12-21,716.88

Finding the Fourth Proportional to 38,707.26, 53,418.12 and 21,716.88

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Solution

The fourth proportional to 38,707.26, 53,418.12 and 21,716.88 is: 29,970.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,707.26 : 53,418.12 = 21,716.88 : x
  2. Step 2: Convert to fraction form
    38,707.26/53,418.12 = 21,716.88/x
  3. Step 3: Cross multiply
    38,707.26x = 53,418.12 × 21,716.88
  4. Step 4: Simplify right side
    38,707.26x = 1,160,074,901.87
  5. Step 5: Solve for x
    x = 1,160,074,901.87/38,707.26
  6. Step 6: Final answer
    x = 29,970.47

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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.