Home / 38,785.45-58,176.55-12,489.61

Finding the Fourth Proportional to 38,785.45, 58,176.55 and 12,489.61

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Solution

The fourth proportional to 38,785.45, 58,176.55 and 12,489.61 is: 18,733.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,785.45 : 58,176.55 = 12,489.61 : x
  2. Step 2: Convert to fraction form
    38,785.45/58,176.55 = 12,489.61/x
  3. Step 3: Cross multiply
    38,785.45x = 58,176.55 × 12,489.61
  4. Step 4: Simplify right side
    38,785.45x = 726,602,420.65
  5. Step 5: Solve for x
    x = 726,602,420.65/38,785.45
  6. Step 6: Final answer
    x = 18,733.89

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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.