Home / 20,922.32-28,872.71-11,362.13

Finding the Fourth Proportional to 20,922.32, 28,872.71 and 11,362.13

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Solution

The fourth proportional to 20,922.32, 28,872.71 and 11,362.13 is: 15,679.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,922.32 : 28,872.71 = 11,362.13 : x
  2. Step 2: Convert to fraction form
    20,922.32/28,872.71 = 11,362.13/x
  3. Step 3: Cross multiply
    20,922.32x = 28,872.71 × 11,362.13
  4. Step 4: Simplify right side
    20,922.32x = 328,055,283.30
  5. Step 5: Solve for x
    x = 328,055,283.30/20,922.32
  6. Step 6: Final answer
    x = 15,679.68

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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.