Home / 12,475.45-18,716.16-4,155.53

Finding the Fourth Proportional to 12,475.45, 18,716.16 and 4,155.53

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Solution

The fourth proportional to 12,475.45, 18,716.16 and 4,155.53 is: 6,234.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,475.45 : 18,716.16 = 4,155.53 : x
  2. Step 2: Convert to fraction form
    12,475.45/18,716.16 = 4,155.53/x
  3. Step 3: Cross multiply
    12,475.45x = 18,716.16 × 4,155.53
  4. Step 4: Simplify right side
    12,475.45x = 77,775,543.59
  5. Step 5: Solve for x
    x = 77,775,543.59/12,475.45
  6. Step 6: Final answer
    x = 6,234.29

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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.