Home / 21,247.40-31,879.82-9,394.92

Finding the Fourth Proportional to 21,247.40, 31,879.82 and 9,394.92

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Solution

The fourth proportional to 21,247.40, 31,879.82 and 9,394.92 is: 14,096.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.40 : 31,879.82 = 9,394.92 : x
  2. Step 2: Convert to fraction form
    21,247.40/31,879.82 = 9,394.92/x
  3. Step 3: Cross multiply
    21,247.40x = 31,879.82 × 9,394.92
  4. Step 4: Simplify right side
    21,247.40x = 299,508,358.51
  5. Step 5: Solve for x
    x = 299,508,358.51/21,247.40
  6. Step 6: Final answer
    x = 14,096.24

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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.