Home / 21,132.24-31,707.26-9,279.92

Finding the Fourth Proportional to 21,132.24, 31,707.26 and 9,279.92

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Solution

The fourth proportional to 21,132.24, 31,707.26 and 9,279.92 is: 13,923.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,132.24 : 31,707.26 = 9,279.92 : x
  2. Step 2: Convert to fraction form
    21,132.24/31,707.26 = 9,279.92/x
  3. Step 3: Cross multiply
    21,132.24x = 31,707.26 × 9,279.92
  4. Step 4: Simplify right side
    21,132.24x = 294,240,836.22
  5. Step 5: Solve for x
    x = 294,240,836.22/21,132.24
  6. Step 6: Final answer
    x = 13,923.79

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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.