Home / 12,375.79-17,078.36-6,998.15

Finding the Fourth Proportional to 12,375.79, 17,078.36 and 6,998.15

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Solution

The fourth proportional to 12,375.79, 17,078.36 and 6,998.15 is: 9,657.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,375.79 : 17,078.36 = 6,998.15 : x
  2. Step 2: Convert to fraction form
    12,375.79/17,078.36 = 6,998.15/x
  3. Step 3: Cross multiply
    12,375.79x = 17,078.36 × 6,998.15
  4. Step 4: Simplify right side
    12,375.79x = 119,516,932.74
  5. Step 5: Solve for x
    x = 119,516,932.74/12,375.79
  6. Step 6: Final answer
    x = 9,657.32

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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.