Home / 21,562.45-29,756.19-12,131.02

Finding the Fourth Proportional to 21,562.45, 29,756.19 and 12,131.02

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Solution

The fourth proportional to 21,562.45, 29,756.19 and 12,131.02 is: 16,740.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,562.45 : 29,756.19 = 12,131.02 : x
  2. Step 2: Convert to fraction form
    21,562.45/29,756.19 = 12,131.02/x
  3. Step 3: Cross multiply
    21,562.45x = 29,756.19 × 12,131.02
  4. Step 4: Simplify right side
    21,562.45x = 360,972,748.97
  5. Step 5: Solve for x
    x = 360,972,748.97/21,562.45
  6. Step 6: Final answer
    x = 16,740.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.