Home / 10,706.28-14,781.12-6,986.76

Finding the Fourth Proportional to 10,706.28, 14,781.12 and 6,986.76

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Solution

The fourth proportional to 10,706.28, 14,781.12 and 6,986.76 is: 9,645.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,706.28 : 14,781.12 = 6,986.76 : x
  2. Step 2: Convert to fraction form
    10,706.28/14,781.12 = 6,986.76/x
  3. Step 3: Cross multiply
    10,706.28x = 14,781.12 × 6,986.76
  4. Step 4: Simplify right side
    10,706.28x = 103,272,137.97
  5. Step 5: Solve for x
    x = 103,272,137.97/10,706.28
  6. Step 6: Final answer
    x = 9,645.94

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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.