Home / 8,720.29-12,993.82-8,296.66

Finding the Fourth Proportional to 8,720.29, 12,993.82 and 8,296.66

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Solution

The fourth proportional to 8,720.29, 12,993.82 and 8,296.66 is: 12,362.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.29 : 12,993.82 = 8,296.66 : x
  2. Step 2: Convert to fraction form
    8,720.29/12,993.82 = 8,296.66/x
  3. Step 3: Cross multiply
    8,720.29x = 12,993.82 × 8,296.66
  4. Step 4: Simplify right side
    8,720.29x = 107,805,302.14
  5. Step 5: Solve for x
    x = 107,805,302.14/8,720.29
  6. Step 6: Final answer
    x = 12,362.58

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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.