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Finding the Fourth Proportional to 10,885.70, 15,029.48 and 8,363.30

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Solution

The fourth proportional to 10,885.70, 15,029.48 and 8,363.30 is: 11,546.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,885.70 : 15,029.48 = 8,363.30 : x
  2. Step 2: Convert to fraction form
    10,885.70/15,029.48 = 8,363.30/x
  3. Step 3: Cross multiply
    10,885.70x = 15,029.48 × 8,363.30
  4. Step 4: Simplify right side
    10,885.70x = 125,696,050.08
  5. Step 5: Solve for x
    x = 125,696,050.08/10,885.70
  6. Step 6: Final answer
    x = 11,546.90

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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.