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Finding the Fourth Proportional to 18,601.13, 27,877.96 and 8,718.63

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Solution

The fourth proportional to 18,601.13, 27,877.96 and 8,718.63 is: 13,066.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,601.13 : 27,877.96 = 8,718.63 : x
  2. Step 2: Convert to fraction form
    18,601.13/27,877.96 = 8,718.63/x
  3. Step 3: Cross multiply
    18,601.13x = 27,877.96 × 8,718.63
  4. Step 4: Simplify right side
    18,601.13x = 243,057,574.80
  5. Step 5: Solve for x
    x = 243,057,574.80/18,601.13
  6. Step 6: Final answer
    x = 13,066.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.