Home / 21,965.92-32,910-18,246.40

Finding the Fourth Proportional to 21,965.92, 32,910 and 18,246.40

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Solution

The fourth proportional to 21,965.92, 32,910 and 18,246.40 is: 27,337.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,965.92 : 32,910 = 18,246.40 : x
  2. Step 2: Convert to fraction form
    21,965.92/32,910 = 18,246.40/x
  3. Step 3: Cross multiply
    21,965.92x = 32,910 × 18,246.40
  4. Step 4: Simplify right side
    21,965.92x = 600,489,024
  5. Step 5: Solve for x
    x = 600,489,024/21,965.92
  6. Step 6: Final answer
    x = 27,337.30

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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.