Home / 21,432.96-32,145.19-6,638.31

Finding the Fourth Proportional to 21,432.96, 32,145.19 and 6,638.31

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Solution

The fourth proportional to 21,432.96, 32,145.19 and 6,638.31 is: 9,956.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,432.96 : 32,145.19 = 6,638.31 : x
  2. Step 2: Convert to fraction form
    21,432.96/32,145.19 = 6,638.31/x
  3. Step 3: Cross multiply
    21,432.96x = 32,145.19 × 6,638.31
  4. Step 4: Simplify right side
    21,432.96x = 213,389,719.63
  5. Step 5: Solve for x
    x = 213,389,719.63/21,432.96
  6. Step 6: Final answer
    x = 9,956.15

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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.