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Finding the Fourth Proportional to 10,862.46, 14,979.06 and 9,663.66

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Solution

The fourth proportional to 10,862.46, 14,979.06 and 9,663.66 is: 13,325.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,862.46 : 14,979.06 = 9,663.66 : x
  2. Step 2: Convert to fraction form
    10,862.46/14,979.06 = 9,663.66/x
  3. Step 3: Cross multiply
    10,862.46x = 14,979.06 × 9,663.66
  4. Step 4: Simplify right side
    10,862.46x = 144,752,542.96
  5. Step 5: Solve for x
    x = 144,752,542.96/10,862.46
  6. Step 6: Final answer
    x = 13,325.94

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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.