Home / 21,356.40-32,034.60-20,335.80

Finding the Fourth Proportional to 21,356.40, 32,034.60 and 20,335.80

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Solution

The fourth proportional to 21,356.40, 32,034.60 and 20,335.80 is: 30,503.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,356.40 : 32,034.60 = 20,335.80 : x
  2. Step 2: Convert to fraction form
    21,356.40/32,034.60 = 20,335.80/x
  3. Step 3: Cross multiply
    21,356.40x = 32,034.60 × 20,335.80
  4. Step 4: Simplify right side
    21,356.40x = 651,449,218.68
  5. Step 5: Solve for x
    x = 651,449,218.68/21,356.40
  6. Step 6: Final answer
    x = 30,503.70

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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.