Home / 13,251.83-18,279.91-8,275.19

Finding the Fourth Proportional to 13,251.83, 18,279.91 and 8,275.19

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Solution

The fourth proportional to 13,251.83, 18,279.91 and 8,275.19 is: 11,415.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.83 : 18,279.91 = 8,275.19 : x
  2. Step 2: Convert to fraction form
    13,251.83/18,279.91 = 8,275.19/x
  3. Step 3: Cross multiply
    13,251.83x = 18,279.91 × 8,275.19
  4. Step 4: Simplify right side
    13,251.83x = 151,269,728.43
  5. Step 5: Solve for x
    x = 151,269,728.43/13,251.83
  6. Step 6: Final answer
    x = 11,415.01

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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.