Home / 19,680.40-29,524.85-9,142.71

Finding the Fourth Proportional to 19,680.40, 29,524.85 and 9,142.71

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Solution

The fourth proportional to 19,680.40, 29,524.85 and 9,142.71 is: 13,716.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,680.40 : 29,524.85 = 9,142.71 : x
  2. Step 2: Convert to fraction form
    19,680.40/29,524.85 = 9,142.71/x
  3. Step 3: Cross multiply
    19,680.40x = 29,524.85 × 9,142.71
  4. Step 4: Simplify right side
    19,680.40x = 269,937,141.34
  5. Step 5: Solve for x
    x = 269,937,141.34/19,680.40
  6. Step 6: Final answer
    x = 13,716.04

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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.