Home / 12,500.14-18,639.94-12,387.63

Finding the Fourth Proportional to 12,500.14, 18,639.94 and 12,387.63

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Solution

The fourth proportional to 12,500.14, 18,639.94 and 12,387.63 is: 18,472.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,500.14 : 18,639.94 = 12,387.63 : x
  2. Step 2: Convert to fraction form
    12,500.14/18,639.94 = 12,387.63/x
  3. Step 3: Cross multiply
    12,500.14x = 18,639.94 × 12,387.63
  4. Step 4: Simplify right side
    12,500.14x = 230,904,718.65
  5. Step 5: Solve for x
    x = 230,904,718.65/12,500.14
  6. Step 6: Final answer
    x = 18,472.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.