Home / 25,457.20-38,134.68-12,976.72

Finding the Fourth Proportional to 25,457.20, 38,134.68 and 12,976.72

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Solution

The fourth proportional to 25,457.20, 38,134.68 and 12,976.72 is: 19,439.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,457.20 : 38,134.68 = 12,976.72 : x
  2. Step 2: Convert to fraction form
    25,457.20/38,134.68 = 12,976.72/x
  3. Step 3: Cross multiply
    25,457.20x = 38,134.68 × 12,976.72
  4. Step 4: Simplify right side
    25,457.20x = 494,863,064.65
  5. Step 5: Solve for x
    x = 494,863,064.65/25,457.20
  6. Step 6: Final answer
    x = 19,439.02

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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.