Home / 20,962.28-28,919.40-11,885.73

Finding the Fourth Proportional to 20,962.28, 28,919.40 and 11,885.73

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Solution

The fourth proportional to 20,962.28, 28,919.40 and 11,885.73 is: 16,397.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,962.28 : 28,919.40 = 11,885.73 : x
  2. Step 2: Convert to fraction form
    20,962.28/28,919.40 = 11,885.73/x
  3. Step 3: Cross multiply
    20,962.28x = 28,919.40 × 11,885.73
  4. Step 4: Simplify right side
    20,962.28x = 343,728,180.16
  5. Step 5: Solve for x
    x = 343,728,180.16/20,962.28
  6. Step 6: Final answer
    x = 16,397.46

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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.