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Finding the Fourth Proportional to 11,522.66, 15,900.05 and 6,486.78

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Solution

The fourth proportional to 11,522.66, 15,900.05 and 6,486.78 is: 8,951.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,522.66 : 15,900.05 = 6,486.78 : x
  2. Step 2: Convert to fraction form
    11,522.66/15,900.05 = 6,486.78/x
  3. Step 3: Cross multiply
    11,522.66x = 15,900.05 × 6,486.78
  4. Step 4: Simplify right side
    11,522.66x = 103,140,165.69
  5. Step 5: Solve for x
    x = 103,140,165.69/11,522.66
  6. Step 6: Final answer
    x = 8,951.08

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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.