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Finding the Fourth Proportional to 18,239.20, 27,358.80 and 16,424.80

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Solution

The fourth proportional to 18,239.20, 27,358.80 and 16,424.80 is: 24,637.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,239.20 : 27,358.80 = 16,424.80 : x
  2. Step 2: Convert to fraction form
    18,239.20/27,358.80 = 16,424.80/x
  3. Step 3: Cross multiply
    18,239.20x = 27,358.80 × 16,424.80
  4. Step 4: Simplify right side
    18,239.20x = 449,362,818.24
  5. Step 5: Solve for x
    x = 449,362,818.24/18,239.20
  6. Step 6: Final answer
    x = 24,637.20

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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.