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Finding the Fourth Proportional to 18,437.40, 27,639.90 and 11,044.80

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Solution

The fourth proportional to 18,437.40, 27,639.90 and 11,044.80 is: 16,557.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,437.40 : 27,639.90 = 11,044.80 : x
  2. Step 2: Convert to fraction form
    18,437.40/27,639.90 = 11,044.80/x
  3. Step 3: Cross multiply
    18,437.40x = 27,639.90 × 11,044.80
  4. Step 4: Simplify right side
    18,437.40x = 305,277,167.52
  5. Step 5: Solve for x
    x = 305,277,167.52/18,437.40
  6. Step 6: Final answer
    x = 16,557.50

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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.