Home / 10,720.98-16,081.56-4,147.92

Finding the Fourth Proportional to 10,720.98, 16,081.56 and 4,147.92

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Solution

The fourth proportional to 10,720.98, 16,081.56 and 4,147.92 is: 6,221.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,720.98 : 16,081.56 = 4,147.92 : x
  2. Step 2: Convert to fraction form
    10,720.98/16,081.56 = 4,147.92/x
  3. Step 3: Cross multiply
    10,720.98x = 16,081.56 × 4,147.92
  4. Step 4: Simplify right side
    10,720.98x = 66,705,024.36
  5. Step 5: Solve for x
    x = 66,705,024.36/10,720.98
  6. Step 6: Final answer
    x = 6,221.91

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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.