Home / 8,919.13-13,320.11-7,166.79

Finding the Fourth Proportional to 8,919.13, 13,320.11 and 7,166.79

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Solution

The fourth proportional to 8,919.13, 13,320.11 and 7,166.79 is: 10,703.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.13 : 13,320.11 = 7,166.79 : x
  2. Step 2: Convert to fraction form
    8,919.13/13,320.11 = 7,166.79/x
  3. Step 3: Cross multiply
    8,919.13x = 13,320.11 × 7,166.79
  4. Step 4: Simplify right side
    8,919.13x = 95,462,431.15
  5. Step 5: Solve for x
    x = 95,462,431.15/8,919.13
  6. Step 6: Final answer
    x = 10,703.11

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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.