Home / 25,458.20-38,136.18-12,977.72

Finding the Fourth Proportional to 25,458.20, 38,136.18 and 12,977.72

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Solution

The fourth proportional to 25,458.20, 38,136.18 and 12,977.72 is: 19,440.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,458.20 : 38,136.18 = 12,977.72 : x
  2. Step 2: Convert to fraction form
    25,458.20/38,136.18 = 12,977.72/x
  3. Step 3: Cross multiply
    25,458.20x = 38,136.18 × 12,977.72
  4. Step 4: Simplify right side
    25,458.20x = 494,920,665.91
  5. Step 5: Solve for x
    x = 494,920,665.91/25,458.20
  6. Step 6: Final answer
    x = 19,440.52

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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.