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Finding the Fourth Proportional to 10,876.68, 15,011.02 and 6,401.53

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Solution

The fourth proportional to 10,876.68, 15,011.02 and 6,401.53 is: 8,834.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,876.68 : 15,011.02 = 6,401.53 : x
  2. Step 2: Convert to fraction form
    10,876.68/15,011.02 = 6,401.53/x
  3. Step 3: Cross multiply
    10,876.68x = 15,011.02 × 6,401.53
  4. Step 4: Simplify right side
    10,876.68x = 96,093,521.63
  5. Step 5: Solve for x
    x = 96,093,521.63/10,876.68
  6. Step 6: Final answer
    x = 8,834.82

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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.