Home / 13,600.08-20,340.54-12,603.78

Finding the Fourth Proportional to 13,600.08, 20,340.54 and 12,603.78

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Solution

The fourth proportional to 13,600.08, 20,340.54 and 12,603.78 is: 18,850.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,600.08 : 20,340.54 = 12,603.78 : x
  2. Step 2: Convert to fraction form
    13,600.08/20,340.54 = 12,603.78/x
  3. Step 3: Cross multiply
    13,600.08x = 20,340.54 × 12,603.78
  4. Step 4: Simplify right side
    13,600.08x = 256,367,691.24
  5. Step 5: Solve for x
    x = 256,367,691.24/13,600.08
  6. Step 6: Final answer
    x = 18,850.45

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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.