Home / 12,339.68-18,512.64-3,575.20

Finding the Fourth Proportional to 12,339.68, 18,512.64 and 3,575.20

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Solution

The fourth proportional to 12,339.68, 18,512.64 and 3,575.20 is: 5,363.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,339.68 : 18,512.64 = 3,575.20 : x
  2. Step 2: Convert to fraction form
    12,339.68/18,512.64 = 3,575.20/x
  3. Step 3: Cross multiply
    12,339.68x = 18,512.64 × 3,575.20
  4. Step 4: Simplify right side
    12,339.68x = 66,186,390.53
  5. Step 5: Solve for x
    x = 66,186,390.53/12,339.68
  6. Step 6: Final answer
    x = 5,363.70

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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.