Home / 21,539.76-32,254.56-12,780.96

Finding the Fourth Proportional to 21,539.76, 32,254.56 and 12,780.96

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Solution

The fourth proportional to 21,539.76, 32,254.56 and 12,780.96 is: 19,138.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,539.76 : 32,254.56 = 12,780.96 : x
  2. Step 2: Convert to fraction form
    21,539.76/32,254.56 = 12,780.96/x
  3. Step 3: Cross multiply
    21,539.76x = 32,254.56 × 12,780.96
  4. Step 4: Simplify right side
    21,539.76x = 412,244,241.18
  5. Step 5: Solve for x
    x = 412,244,241.18/21,539.76
  6. Step 6: Final answer
    x = 19,138.76

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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.