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Finding the Fourth Proportional to 12,039.84, 18,037.08 and 9,434.88

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Solution

The fourth proportional to 12,039.84, 18,037.08 and 9,434.88 is: 14,134.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,039.84 : 18,037.08 = 9,434.88 : x
  2. Step 2: Convert to fraction form
    12,039.84/18,037.08 = 9,434.88/x
  3. Step 3: Cross multiply
    12,039.84x = 18,037.08 × 9,434.88
  4. Step 4: Simplify right side
    12,039.84x = 170,177,685.35
  5. Step 5: Solve for x
    x = 170,177,685.35/12,039.84
  6. Step 6: Final answer
    x = 14,134.55

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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.