Home / 15,002.88-20,697.30-8,711.61

Finding the Fourth Proportional to 15,002.88, 20,697.30 and 8,711.61

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Solution

The fourth proportional to 15,002.88, 20,697.30 and 8,711.61 is: 12,018.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,002.88 : 20,697.30 = 8,711.61 : x
  2. Step 2: Convert to fraction form
    15,002.88/20,697.30 = 8,711.61/x
  3. Step 3: Cross multiply
    15,002.88x = 20,697.30 × 8,711.61
  4. Step 4: Simplify right side
    15,002.88x = 180,306,805.65
  5. Step 5: Solve for x
    x = 180,306,805.65/15,002.88
  6. Step 6: Final answer
    x = 12,018.15

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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.