Home / 12,489.91-18,737.81-4,056.38

Finding the Fourth Proportional to 12,489.91, 18,737.81 and 4,056.38

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Solution

The fourth proportional to 12,489.91, 18,737.81 and 4,056.38 is: 6,085.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,489.91 : 18,737.81 = 4,056.38 : x
  2. Step 2: Convert to fraction form
    12,489.91/18,737.81 = 4,056.38/x
  3. Step 3: Cross multiply
    12,489.91x = 18,737.81 × 4,056.38
  4. Step 4: Simplify right side
    12,489.91x = 76,007,677.73
  5. Step 5: Solve for x
    x = 76,007,677.73/12,489.91
  6. Step 6: Final answer
    x = 6,085.53

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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.