Home / 13,263.33-18,305.16-8,561.28

Finding the Fourth Proportional to 13,263.33, 18,305.16 and 8,561.28

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Solution

The fourth proportional to 13,263.33, 18,305.16 and 8,561.28 is: 11,815.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,263.33 : 18,305.16 = 8,561.28 : x
  2. Step 2: Convert to fraction form
    13,263.33/18,305.16 = 8,561.28/x
  3. Step 3: Cross multiply
    13,263.33x = 18,305.16 × 8,561.28
  4. Step 4: Simplify right side
    13,263.33x = 156,715,600.20
  5. Step 5: Solve for x
    x = 156,715,600.20/13,263.33
  6. Step 6: Final answer
    x = 11,815.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.