Home / 38,499.30-57,720.15-20,988.90

Finding the Fourth Proportional to 38,499.30, 57,720.15 and 20,988.90

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Solution

The fourth proportional to 38,499.30, 57,720.15 and 20,988.90 is: 31,467.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,499.30 : 57,720.15 = 20,988.90 : x
  2. Step 2: Convert to fraction form
    38,499.30/57,720.15 = 20,988.90/x
  3. Step 3: Cross multiply
    38,499.30x = 57,720.15 × 20,988.90
  4. Step 4: Simplify right side
    38,499.30x = 1,211,482,456.34
  5. Step 5: Solve for x
    x = 1,211,482,456.34/38,499.30
  6. Step 6: Final answer
    x = 31,467.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.