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Finding the Fourth Proportional to 21,579.22, 32,361 and 7,535.31

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Solution

The fourth proportional to 21,579.22, 32,361 and 7,535.31 is: 11,300.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,579.22 : 32,361 = 7,535.31 : x
  2. Step 2: Convert to fraction form
    21,579.22/32,361 = 7,535.31/x
  3. Step 3: Cross multiply
    21,579.22x = 32,361 × 7,535.31
  4. Step 4: Simplify right side
    21,579.22x = 243,850,166.91
  5. Step 5: Solve for x
    x = 243,850,166.91/21,579.22
  6. Step 6: Final answer
    x = 11,300.23

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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.