Home / 21,561.67-32,347.88-7,521.90

Finding the Fourth Proportional to 21,561.67, 32,347.88 and 7,521.90

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Solution

The fourth proportional to 21,561.67, 32,347.88 and 7,521.90 is: 11,284.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,561.67 : 32,347.88 = 7,521.90 : x
  2. Step 2: Convert to fraction form
    21,561.67/32,347.88 = 7,521.90/x
  3. Step 3: Cross multiply
    21,561.67x = 32,347.88 × 7,521.90
  4. Step 4: Simplify right side
    21,561.67x = 243,317,518.57
  5. Step 5: Solve for x
    x = 243,317,518.57/21,561.67
  6. Step 6: Final answer
    x = 11,284.73

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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.