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Finding the Fourth Proportional to 15,451.65, 23,169.79 and 4,920.29

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Solution

The fourth proportional to 15,451.65, 23,169.79 and 4,920.29 is: 7,377.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,451.65 : 23,169.79 = 4,920.29 : x
  2. Step 2: Convert to fraction form
    15,451.65/23,169.79 = 4,920.29/x
  3. Step 3: Cross multiply
    15,451.65x = 23,169.79 × 4,920.29
  4. Step 4: Simplify right side
    15,451.65x = 114,002,150.11
  5. Step 5: Solve for x
    x = 114,002,150.11/15,451.65
  6. Step 6: Final answer
    x = 7,377.99

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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.