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Finding the Fourth Proportional to 10,360.76, 15,508.13 and 8,257.05

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Solution

The fourth proportional to 10,360.76, 15,508.13 and 8,257.05 is: 12,359.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,360.76 : 15,508.13 = 8,257.05 : x
  2. Step 2: Convert to fraction form
    10,360.76/15,508.13 = 8,257.05/x
  3. Step 3: Cross multiply
    10,360.76x = 15,508.13 × 8,257.05
  4. Step 4: Simplify right side
    10,360.76x = 128,051,363.53
  5. Step 5: Solve for x
    x = 128,051,363.53/10,360.76
  6. Step 6: Final answer
    x = 12,359.27

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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.