Home / 28,249.60-42,374.40-21,708.80

Finding the Fourth Proportional to 28,249.60, 42,374.40 and 21,708.80

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Solution

The fourth proportional to 28,249.60, 42,374.40 and 21,708.80 is: 32,563.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,249.60 : 42,374.40 = 21,708.80 : x
  2. Step 2: Convert to fraction form
    28,249.60/42,374.40 = 21,708.80/x
  3. Step 3: Cross multiply
    28,249.60x = 42,374.40 × 21,708.80
  4. Step 4: Simplify right side
    28,249.60x = 919,897,374.72
  5. Step 5: Solve for x
    x = 919,897,374.72/28,249.60
  6. Step 6: Final answer
    x = 32,563.20

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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.