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Finding the Fourth Proportional to 18,211.84, 27,309.12 and 9,437.92

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Solution

The fourth proportional to 18,211.84, 27,309.12 and 9,437.92 is: 14,152.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,211.84 : 27,309.12 = 9,437.92 : x
  2. Step 2: Convert to fraction form
    18,211.84/27,309.12 = 9,437.92/x
  3. Step 3: Cross multiply
    18,211.84x = 27,309.12 × 9,437.92
  4. Step 4: Simplify right side
    18,211.84x = 257,741,289.83
  5. Step 5: Solve for x
    x = 257,741,289.83/18,211.84
  6. Step 6: Final answer
    x = 14,152.40

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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.