Home / 38,803.78-58,168.14-12,490.66

Finding the Fourth Proportional to 38,803.78, 58,168.14 and 12,490.66

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Solution

The fourth proportional to 38,803.78, 58,168.14 and 12,490.66 is: 18,723.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,803.78 : 58,168.14 = 12,490.66 : x
  2. Step 2: Convert to fraction form
    38,803.78/58,168.14 = 12,490.66/x
  3. Step 3: Cross multiply
    38,803.78x = 58,168.14 × 12,490.66
  4. Step 4: Simplify right side
    38,803.78x = 726,558,459.57
  5. Step 5: Solve for x
    x = 726,558,459.57/38,803.78
  6. Step 6: Final answer
    x = 18,723.91

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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.