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Finding the Fourth Proportional to 9,680.90, 14,492.10 and 8,756.87

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Solution

The fourth proportional to 9,680.90, 14,492.10 and 8,756.87 is: 13,108.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,680.90 : 14,492.10 = 8,756.87 : x
  2. Step 2: Convert to fraction form
    9,680.90/14,492.10 = 8,756.87/x
  3. Step 3: Cross multiply
    9,680.90x = 14,492.10 × 8,756.87
  4. Step 4: Simplify right side
    9,680.90x = 126,905,435.73
  5. Step 5: Solve for x
    x = 126,905,435.73/9,680.90
  6. Step 6: Final answer
    x = 13,108.85

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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.