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Finding the Fourth Proportional to 10,592.80, 15,889.20 and 8,903.20

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Solution

The fourth proportional to 10,592.80, 15,889.20 and 8,903.20 is: 13,354.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,592.80 : 15,889.20 = 8,903.20 : x
  2. Step 2: Convert to fraction form
    10,592.80/15,889.20 = 8,903.20/x
  3. Step 3: Cross multiply
    10,592.80x = 15,889.20 × 8,903.20
  4. Step 4: Simplify right side
    10,592.80x = 141,464,725.44
  5. Step 5: Solve for x
    x = 141,464,725.44/10,592.80
  6. Step 6: Final answer
    x = 13,354.80

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Similar ratio
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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.