Home / 28,064.20-38,729.16-15,488.92

Finding the Fourth Proportional to 28,064.20, 38,729.16 and 15,488.92

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Solution

The fourth proportional to 28,064.20, 38,729.16 and 15,488.92 is: 21,375.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,064.20 : 38,729.16 = 15,488.92 : x
  2. Step 2: Convert to fraction form
    28,064.20/38,729.16 = 15,488.92/x
  3. Step 3: Cross multiply
    28,064.20x = 38,729.16 × 15,488.92
  4. Step 4: Simplify right side
    28,064.20x = 599,872,860.91
  5. Step 5: Solve for x
    x = 599,872,860.91/28,064.20
  6. Step 6: Final answer
    x = 21,375.02

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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.