Home / 8,271.18-12,393.51-7,431.90

Finding the Fourth Proportional to 8,271.18, 12,393.51 and 7,431.90

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Solution

The fourth proportional to 8,271.18, 12,393.51 and 7,431.90 is: 11,135.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,271.18 : 12,393.51 = 7,431.90 : x
  2. Step 2: Convert to fraction form
    8,271.18/12,393.51 = 7,431.90/x
  3. Step 3: Cross multiply
    8,271.18x = 12,393.51 × 7,431.90
  4. Step 4: Simplify right side
    8,271.18x = 92,107,326.97
  5. Step 5: Solve for x
    x = 92,107,326.97/8,271.18
  6. Step 6: Final answer
    x = 11,135.94

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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.