Home / 38,751.91-58,136.06-12,458.70

Finding the Fourth Proportional to 38,751.91, 58,136.06 and 12,458.70

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Solution

The fourth proportional to 38,751.91, 58,136.06 and 12,458.70 is: 18,690.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,751.91 : 58,136.06 = 12,458.70 : x
  2. Step 2: Convert to fraction form
    38,751.91/58,136.06 = 12,458.70/x
  3. Step 3: Cross multiply
    38,751.91x = 58,136.06 × 12,458.70
  4. Step 4: Simplify right side
    38,751.91x = 724,299,730.72
  5. Step 5: Solve for x
    x = 724,299,730.72/38,751.91
  6. Step 6: Final answer
    x = 18,690.68

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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.