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Finding the Fourth Proportional to 8,805.72, 13,127.10 and 8,670.87

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Solution

The fourth proportional to 8,805.72, 13,127.10 and 8,670.87 is: 12,926.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,805.72 : 13,127.10 = 8,670.87 : x
  2. Step 2: Convert to fraction form
    8,805.72/13,127.10 = 8,670.87/x
  3. Step 3: Cross multiply
    8,805.72x = 13,127.10 × 8,670.87
  4. Step 4: Simplify right side
    8,805.72x = 113,823,377.58
  5. Step 5: Solve for x
    x = 113,823,377.58/8,805.72
  6. Step 6: Final answer
    x = 12,926.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.