Home / 12,543.28-17,321.45-8,074.80

Finding the Fourth Proportional to 12,543.28, 17,321.45 and 8,074.80

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Solution

The fourth proportional to 12,543.28, 17,321.45 and 8,074.80 is: 11,150.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543.28 : 17,321.45 = 8,074.80 : x
  2. Step 2: Convert to fraction form
    12,543.28/17,321.45 = 8,074.80/x
  3. Step 3: Cross multiply
    12,543.28x = 17,321.45 × 8,074.80
  4. Step 4: Simplify right side
    12,543.28x = 139,867,204.09
  5. Step 5: Solve for x
    x = 139,867,204.09/12,543.28
  6. Step 6: Final answer
    x = 11,150.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.