Home / 14,728.59-20,315.09-9,691.20

Finding the Fourth Proportional to 14,728.59, 20,315.09 and 9,691.20

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Solution

The fourth proportional to 14,728.59, 20,315.09 and 9,691.20 is: 13,367.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,728.59 : 20,315.09 = 9,691.20 : x
  2. Step 2: Convert to fraction form
    14,728.59/20,315.09 = 9,691.20/x
  3. Step 3: Cross multiply
    14,728.59x = 20,315.09 × 9,691.20
  4. Step 4: Simplify right side
    14,728.59x = 196,877,624.44
  5. Step 5: Solve for x
    x = 196,877,624.44/14,728.59
  6. Step 6: Final answer
    x = 13,367.04

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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.