Home / 20,822.46-28,734.71-11,870.11

Finding the Fourth Proportional to 20,822.46, 28,734.71 and 11,870.11

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Solution

The fourth proportional to 20,822.46, 28,734.71 and 11,870.11 is: 16,380.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,822.46 : 28,734.71 = 11,870.11 : x
  2. Step 2: Convert to fraction form
    20,822.46/28,734.71 = 11,870.11/x
  3. Step 3: Cross multiply
    20,822.46x = 28,734.71 × 11,870.11
  4. Step 4: Simplify right side
    20,822.46x = 341,084,168.52
  5. Step 5: Solve for x
    x = 341,084,168.52/20,822.46
  6. Step 6: Final answer
    x = 16,380.59

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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.