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Finding the Fourth Proportional to 15,095.62, 20,830.99 and 8,381.24

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Solution

The fourth proportional to 15,095.62, 20,830.99 and 8,381.24 is: 11,565.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,095.62 : 20,830.99 = 8,381.24 : x
  2. Step 2: Convert to fraction form
    15,095.62/20,830.99 = 8,381.24/x
  3. Step 3: Cross multiply
    15,095.62x = 20,830.99 × 8,381.24
  4. Step 4: Simplify right side
    15,095.62x = 174,589,578.71
  5. Step 5: Solve for x
    x = 174,589,578.71/15,095.62
  6. Step 6: Final answer
    x = 11,565.58

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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.