Home / 14,279.92-21,407.56-5,520.98

Finding the Fourth Proportional to 14,279.92, 21,407.56 and 5,520.98

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Solution

The fourth proportional to 14,279.92, 21,407.56 and 5,520.98 is: 8,276.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,279.92 : 21,407.56 = 5,520.98 : x
  2. Step 2: Convert to fraction form
    14,279.92/21,407.56 = 5,520.98/x
  3. Step 3: Cross multiply
    14,279.92x = 21,407.56 × 5,520.98
  4. Step 4: Simplify right side
    14,279.92x = 118,190,710.61
  5. Step 5: Solve for x
    x = 118,190,710.61/14,279.92
  6. Step 6: Final answer
    x = 8,276.71

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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.