Home / 15,027.74-20,722.92-9,992.78

Finding the Fourth Proportional to 15,027.74, 20,722.92 and 9,992.78

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Solution

The fourth proportional to 15,027.74, 20,722.92 and 9,992.78 is: 13,779.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,027.74 : 20,722.92 = 9,992.78 : x
  2. Step 2: Convert to fraction form
    15,027.74/20,722.92 = 9,992.78/x
  3. Step 3: Cross multiply
    15,027.74x = 20,722.92 × 9,992.78
  4. Step 4: Simplify right side
    15,027.74x = 207,079,573.35
  5. Step 5: Solve for x
    x = 207,079,573.35/15,027.74
  6. Step 6: Final answer
    x = 13,779.82

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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.