Home / 21,380.90-32,068.33-7,340.68

Finding the Fourth Proportional to 21,380.90, 32,068.33 and 7,340.68

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Solution

The fourth proportional to 21,380.90, 32,068.33 and 7,340.68 is: 11,009.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,380.90 : 32,068.33 = 7,340.68 : x
  2. Step 2: Convert to fraction form
    21,380.90/32,068.33 = 7,340.68/x
  3. Step 3: Cross multiply
    21,380.90x = 32,068.33 × 7,340.68
  4. Step 4: Simplify right side
    21,380.90x = 235,403,348.66
  5. Step 5: Solve for x
    x = 235,403,348.66/21,380.90
  6. Step 6: Final answer
    x = 11,009.98

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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.