Home / 12,917.64-19,375.38-5,124.36

Finding the Fourth Proportional to 12,917.64, 19,375.38 and 5,124.36

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Solution

The fourth proportional to 12,917.64, 19,375.38 and 5,124.36 is: 7,686.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,917.64 : 19,375.38 = 5,124.36 : x
  2. Step 2: Convert to fraction form
    12,917.64/19,375.38 = 5,124.36/x
  3. Step 3: Cross multiply
    12,917.64x = 19,375.38 × 5,124.36
  4. Step 4: Simplify right side
    12,917.64x = 99,286,422.26
  5. Step 5: Solve for x
    x = 99,286,422.26/12,917.64
  6. Step 6: Final answer
    x = 7,686.11

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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.