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Finding the Fourth Proportional to 18,118.62, 27,182.79 and 14,434.74

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Solution

The fourth proportional to 18,118.62, 27,182.79 and 14,434.74 is: 21,655.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,118.62 : 27,182.79 = 14,434.74 : x
  2. Step 2: Convert to fraction form
    18,118.62/27,182.79 = 14,434.74/x
  3. Step 3: Cross multiply
    18,118.62x = 27,182.79 × 14,434.74
  4. Step 4: Simplify right side
    18,118.62x = 392,376,506.12
  5. Step 5: Solve for x
    x = 392,376,506.12/18,118.62
  6. Step 6: Final answer
    x = 21,655.98

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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.