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Finding the Fourth Proportional to 13,666.71, 18,863.13 and 8,948.25

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Solution

The fourth proportional to 13,666.71, 18,863.13 and 8,948.25 is: 12,350.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,666.71 : 18,863.13 = 8,948.25 : x
  2. Step 2: Convert to fraction form
    13,666.71/18,863.13 = 8,948.25/x
  3. Step 3: Cross multiply
    13,666.71x = 18,863.13 × 8,948.25
  4. Step 4: Simplify right side
    13,666.71x = 168,792,003.02
  5. Step 5: Solve for x
    x = 168,792,003.02/13,666.71
  6. Step 6: Final answer
    x = 12,350.60

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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.