Home / 12,750.50-19,131.12-6,422.08

Finding the Fourth Proportional to 12,750.50, 19,131.12 and 6,422.08

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Solution

The fourth proportional to 12,750.50, 19,131.12 and 6,422.08 is: 9,635.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,750.50 : 19,131.12 = 6,422.08 : x
  2. Step 2: Convert to fraction form
    12,750.50/19,131.12 = 6,422.08/x
  3. Step 3: Cross multiply
    12,750.50x = 19,131.12 × 6,422.08
  4. Step 4: Simplify right side
    12,750.50x = 122,861,583.13
  5. Step 5: Solve for x
    x = 122,861,583.13/12,750.50
  6. Step 6: Final answer
    x = 9,635.82

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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.