Home / 8,319.11-12,386.30-8,202.87

Finding the Fourth Proportional to 8,319.11, 12,386.30 and 8,202.87

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Solution

The fourth proportional to 8,319.11, 12,386.30 and 8,202.87 is: 12,213.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,319.11 : 12,386.30 = 8,202.87 : x
  2. Step 2: Convert to fraction form
    8,319.11/12,386.30 = 8,202.87/x
  3. Step 3: Cross multiply
    8,319.11x = 12,386.30 × 8,202.87
  4. Step 4: Simplify right side
    8,319.11x = 101,603,167.67
  5. Step 5: Solve for x
    x = 101,603,167.67/8,319.11
  6. Step 6: Final answer
    x = 12,213.23

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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.