Home / 20,822.40-31,233.60-12,052.80

Finding the Fourth Proportional to 20,822.40, 31,233.60 and 12,052.80

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Solution

The fourth proportional to 20,822.40, 31,233.60 and 12,052.80 is: 18,079.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,822.40 : 31,233.60 = 12,052.80 : x
  2. Step 2: Convert to fraction form
    20,822.40/31,233.60 = 12,052.80/x
  3. Step 3: Cross multiply
    20,822.40x = 31,233.60 × 12,052.80
  4. Step 4: Simplify right side
    20,822.40x = 376,452,334.08
  5. Step 5: Solve for x
    x = 376,452,334.08/20,822.40
  6. Step 6: Final answer
    x = 18,079.20

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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.