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Finding the Fourth Proportional to 18,444.71, 27,625.44 and 12,922.70

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Solution

The fourth proportional to 18,444.71, 27,625.44 and 12,922.70 is: 19,354.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,444.71 : 27,625.44 = 12,922.70 : x
  2. Step 2: Convert to fraction form
    18,444.71/27,625.44 = 12,922.70/x
  3. Step 3: Cross multiply
    18,444.71x = 27,625.44 × 12,922.70
  4. Step 4: Simplify right side
    18,444.71x = 356,995,359.89
  5. Step 5: Solve for x
    x = 356,995,359.89/18,444.71
  6. Step 6: Final answer
    x = 19,354.89

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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.