Home / 13,255.80-18,279.45-8,777.92

Finding the Fourth Proportional to 13,255.80, 18,279.45 and 8,777.92

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Solution

The fourth proportional to 13,255.80, 18,279.45 and 8,777.92 is: 12,104.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,255.80 : 18,279.45 = 8,777.92 : x
  2. Step 2: Convert to fraction form
    13,255.80/18,279.45 = 8,777.92/x
  3. Step 3: Cross multiply
    13,255.80x = 18,279.45 × 8,777.92
  4. Step 4: Simplify right side
    13,255.80x = 160,455,513.63
  5. Step 5: Solve for x
    x = 160,455,513.63/13,255.80
  6. Step 6: Final answer
    x = 12,104.55

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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.