Home / 21,334.40-32,001.60-20,124.80

Finding the Fourth Proportional to 21,334.40, 32,001.60 and 20,124.80

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Solution

The fourth proportional to 21,334.40, 32,001.60 and 20,124.80 is: 30,187.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,334.40 : 32,001.60 = 20,124.80 : x
  2. Step 2: Convert to fraction form
    21,334.40/32,001.60 = 20,124.80/x
  3. Step 3: Cross multiply
    21,334.40x = 32,001.60 × 20,124.80
  4. Step 4: Simplify right side
    21,334.40x = 644,025,799.68
  5. Step 5: Solve for x
    x = 644,025,799.68/21,334.40
  6. Step 6: Final answer
    x = 30,187.20

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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.