Home / 12,687.12-19,034.82-5,666.28

Finding the Fourth Proportional to 12,687.12, 19,034.82 and 5,666.28

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Solution

The fourth proportional to 12,687.12, 19,034.82 and 5,666.28 is: 8,501.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,687.12 : 19,034.82 = 5,666.28 : x
  2. Step 2: Convert to fraction form
    12,687.12/19,034.82 = 5,666.28/x
  3. Step 3: Cross multiply
    12,687.12x = 19,034.82 × 5,666.28
  4. Step 4: Simplify right side
    12,687.12x = 107,856,619.87
  5. Step 5: Solve for x
    x = 107,856,619.87/12,687.12
  6. Step 6: Final answer
    x = 8,501.27

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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.