Home / 21,180.24-31,737.96-11,320.92

Finding the Fourth Proportional to 21,180.24, 31,737.96 and 11,320.92

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Solution

The fourth proportional to 21,180.24, 31,737.96 and 11,320.92 is: 16,964.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.24 : 31,737.96 = 11,320.92 : x
  2. Step 2: Convert to fraction form
    21,180.24/31,737.96 = 11,320.92/x
  3. Step 3: Cross multiply
    21,180.24x = 31,737.96 × 11,320.92
  4. Step 4: Simplify right side
    21,180.24x = 359,302,906.12
  5. Step 5: Solve for x
    x = 359,302,906.12/21,180.24
  6. Step 6: Final answer
    x = 16,964.06

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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.