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Finding the Fourth Proportional to 15,043.32, 20,759.00 and 8,328.83

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Solution

The fourth proportional to 15,043.32, 20,759.00 and 8,328.83 is: 11,493.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,043.32 : 20,759.00 = 8,328.83 : x
  2. Step 2: Convert to fraction form
    15,043.32/20,759.00 = 8,328.83/x
  3. Step 3: Cross multiply
    15,043.32x = 20,759.00 × 8,328.83
  4. Step 4: Simplify right side
    15,043.32x = 172,898,036.53
  5. Step 5: Solve for x
    x = 172,898,036.53/15,043.32
  6. Step 6: Final answer
    x = 11,493.34

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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.