Home / 21,947.40-32,906.64-12,459.96

Finding the Fourth Proportional to 21,947.40, 32,906.64 and 12,459.96

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Solution

The fourth proportional to 21,947.40, 32,906.64 and 12,459.96 is: 18,681.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,947.40 : 32,906.64 = 12,459.96 : x
  2. Step 2: Convert to fraction form
    21,947.40/32,906.64 = 12,459.96/x
  3. Step 3: Cross multiply
    21,947.40x = 32,906.64 × 12,459.96
  4. Step 4: Simplify right side
    21,947.40x = 410,015,418.13
  5. Step 5: Solve for x
    x = 410,015,418.13/21,947.40
  6. Step 6: Final answer
    x = 18,681.73

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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.