Home / 10,288.30-15,432.45-9,885.10

Finding the Fourth Proportional to 10,288.30, 15,432.45 and 9,885.10

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Solution

The fourth proportional to 10,288.30, 15,432.45 and 9,885.10 is: 14,827.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,288.30 : 15,432.45 = 9,885.10 : x
  2. Step 2: Convert to fraction form
    10,288.30/15,432.45 = 9,885.10/x
  3. Step 3: Cross multiply
    10,288.30x = 15,432.45 × 9,885.10
  4. Step 4: Simplify right side
    10,288.30x = 152,551,311.50
  5. Step 5: Solve for x
    x = 152,551,311.50/10,288.30
  6. Step 6: Final answer
    x = 14,827.65

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.