Home / 21,716.14-32,579-12,360.57

Finding the Fourth Proportional to 21,716.14, 32,579 and 12,360.57

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Solution

The fourth proportional to 21,716.14, 32,579 and 12,360.57 is: 18,543.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,716.14 : 32,579 = 12,360.57 : x
  2. Step 2: Convert to fraction form
    21,716.14/32,579 = 12,360.57/x
  3. Step 3: Cross multiply
    21,716.14x = 32,579 × 12,360.57
  4. Step 4: Simplify right side
    21,716.14x = 402,695,010.03
  5. Step 5: Solve for x
    x = 402,695,010.03/21,716.14
  6. Step 6: Final answer
    x = 18,543.58

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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.