Home / 8,531.15-12,739.15-6,974.21

Finding the Fourth Proportional to 8,531.15, 12,739.15 and 6,974.21

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Solution

The fourth proportional to 8,531.15, 12,739.15 and 6,974.21 is: 10,414.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,531.15 : 12,739.15 = 6,974.21 : x
  2. Step 2: Convert to fraction form
    8,531.15/12,739.15 = 6,974.21/x
  3. Step 3: Cross multiply
    8,531.15x = 12,739.15 × 6,974.21
  4. Step 4: Simplify right side
    8,531.15x = 88,845,507.32
  5. Step 5: Solve for x
    x = 88,845,507.32/8,531.15
  6. Step 6: Final answer
    x = 10,414.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.