Home / 38,689.57-53,387.80-21,910.69

Finding the Fourth Proportional to 38,689.57, 53,387.80 and 21,910.69

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Solution

The fourth proportional to 38,689.57, 53,387.80 and 21,910.69 is: 30,234.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,689.57 : 53,387.80 = 21,910.69 : x
  2. Step 2: Convert to fraction form
    38,689.57/53,387.80 = 21,910.69/x
  3. Step 3: Cross multiply
    38,689.57x = 53,387.80 × 21,910.69
  4. Step 4: Simplify right side
    38,689.57x = 1,169,763,535.58
  5. Step 5: Solve for x
    x = 1,169,763,535.58/38,689.57
  6. Step 6: Final answer
    x = 30,234.60

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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.