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Finding the Fourth Proportional to 12,039.68, 18,030.18 and 8,331.50

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Solution

The fourth proportional to 12,039.68, 18,030.18 and 8,331.50 is: 12,476.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,039.68 : 18,030.18 = 8,331.50 : x
  2. Step 2: Convert to fraction form
    12,039.68/18,030.18 = 8,331.50/x
  3. Step 3: Cross multiply
    12,039.68x = 18,030.18 × 8,331.50
  4. Step 4: Simplify right side
    12,039.68x = 150,218,444.67
  5. Step 5: Solve for x
    x = 150,218,444.67/12,039.68
  6. Step 6: Final answer
    x = 12,476.95

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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.