Home / 13,279.88-19,921.86-4,512.74

Finding the Fourth Proportional to 13,279.88, 19,921.86 and 4,512.74

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Solution

The fourth proportional to 13,279.88, 19,921.86 and 4,512.74 is: 6,769.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.88 : 19,921.86 = 4,512.74 : x
  2. Step 2: Convert to fraction form
    13,279.88/19,921.86 = 4,512.74/x
  3. Step 3: Cross multiply
    13,279.88x = 19,921.86 × 4,512.74
  4. Step 4: Simplify right side
    13,279.88x = 89,902,151.93
  5. Step 5: Solve for x
    x = 89,902,151.93/13,279.88
  6. Step 6: Final answer
    x = 6,769.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.