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Finding the Fourth Proportional to 15,043.54, 20,759.81 and 8,329.14

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Solution

The fourth proportional to 15,043.54, 20,759.81 and 8,329.14 is: 11,494.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,043.54 : 20,759.81 = 8,329.14 : x
  2. Step 2: Convert to fraction form
    15,043.54/20,759.81 = 8,329.14/x
  3. Step 3: Cross multiply
    15,043.54x = 20,759.81 × 8,329.14
  4. Step 4: Simplify right side
    15,043.54x = 172,911,363.86
  5. Step 5: Solve for x
    x = 172,911,363.86/15,043.54
  6. Step 6: Final answer
    x = 11,494.06

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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.