Home / 21,938.31-32,909.52-6,143.31

Finding the Fourth Proportional to 21,938.31, 32,909.52 and 6,143.31

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Solution

The fourth proportional to 21,938.31, 32,909.52 and 6,143.31 is: 9,215.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,938.31 : 32,909.52 = 6,143.31 : x
  2. Step 2: Convert to fraction form
    21,938.31/32,909.52 = 6,143.31/x
  3. Step 3: Cross multiply
    21,938.31x = 32,909.52 × 6,143.31
  4. Step 4: Simplify right side
    21,938.31x = 202,173,383.31
  5. Step 5: Solve for x
    x = 202,173,383.31/21,938.31
  6. Step 6: Final answer
    x = 9,215.54

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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.