Home / 12,432.87-18,650.24-4,118.76

Finding the Fourth Proportional to 12,432.87, 18,650.24 and 4,118.76

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Solution

The fourth proportional to 12,432.87, 18,650.24 and 4,118.76 is: 6,178.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,432.87 : 18,650.24 = 4,118.76 : x
  2. Step 2: Convert to fraction form
    12,432.87/18,650.24 = 4,118.76/x
  3. Step 3: Cross multiply
    12,432.87x = 18,650.24 × 4,118.76
  4. Step 4: Simplify right side
    12,432.87x = 76,815,841.91
  5. Step 5: Solve for x
    x = 76,815,841.91/12,432.87
  6. Step 6: Final answer
    x = 6,178.45

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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.