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Finding the Fourth Proportional to 21,938.44, 32,909.72 and 6,143.44

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Solution

The fourth proportional to 21,938.44, 32,909.72 and 6,143.44 is: 9,215.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,938.44 : 32,909.72 = 6,143.44 : x
  2. Step 2: Convert to fraction form
    21,938.44/32,909.72 = 6,143.44/x
  3. Step 3: Cross multiply
    21,938.44x = 32,909.72 × 6,143.44
  4. Step 4: Simplify right side
    21,938.44x = 202,178,890.24
  5. Step 5: Solve for x
    x = 202,178,890.24/21,938.44
  6. Step 6: Final answer
    x = 9,215.74

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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.