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Finding the Fourth Proportional to 25,299.92, 37,918.20 and 12,149.84

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Solution

The fourth proportional to 25,299.92, 37,918.20 and 12,149.84 is: 18,209.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,299.92 : 37,918.20 = 12,149.84 : x
  2. Step 2: Convert to fraction form
    25,299.92/37,918.20 = 12,149.84/x
  3. Step 3: Cross multiply
    25,299.92x = 37,918.20 × 12,149.84
  4. Step 4: Simplify right side
    25,299.92x = 460,700,063.09
  5. Step 5: Solve for x
    x = 460,700,063.09/25,299.92
  6. Step 6: Final answer
    x = 18,209.55

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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.