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Finding the Fourth Proportional to 15,043.49, 20,759.96 and 8,328.71

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Solution

The fourth proportional to 15,043.49, 20,759.96 and 8,328.71 is: 11,493.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,043.49 : 20,759.96 = 8,328.71 : x
  2. Step 2: Convert to fraction form
    15,043.49/20,759.96 = 8,328.71/x
  3. Step 3: Cross multiply
    15,043.49x = 20,759.96 × 8,328.71
  4. Step 4: Simplify right side
    15,043.49x = 172,903,644.81
  5. Step 5: Solve for x
    x = 172,903,644.81/15,043.49
  6. Step 6: Final answer
    x = 11,493.59

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Half scale
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Double scale
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Similar ratio
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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.