Home / 20,331.84-28,060.44-12,374.88

Finding the Fourth Proportional to 20,331.84, 28,060.44 and 12,374.88

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Solution

The fourth proportional to 20,331.84, 28,060.44 and 12,374.88 is: 17,078.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,331.84 : 28,060.44 = 12,374.88 : x
  2. Step 2: Convert to fraction form
    20,331.84/28,060.44 = 12,374.88/x
  3. Step 3: Cross multiply
    20,331.84x = 28,060.44 × 12,374.88
  4. Step 4: Simplify right side
    20,331.84x = 347,244,577.75
  5. Step 5: Solve for x
    x = 347,244,577.75/20,331.84
  6. Step 6: Final answer
    x = 17,078.86

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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.