Home / 10,717.84-16,149.79-8,812.72

Finding the Fourth Proportional to 10,717.84, 16,149.79 and 8,812.72

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Solution

The fourth proportional to 10,717.84, 16,149.79 and 8,812.72 is: 13,279.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,717.84 : 16,149.79 = 8,812.72 : x
  2. Step 2: Convert to fraction form
    10,717.84/16,149.79 = 8,812.72/x
  3. Step 3: Cross multiply
    10,717.84x = 16,149.79 × 8,812.72
  4. Step 4: Simplify right side
    10,717.84x = 142,323,577.33
  5. Step 5: Solve for x
    x = 142,323,577.33/10,717.84
  6. Step 6: Final answer
    x = 13,279.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.