Home / 21,564.40-29,757.24-12,131.14

Finding the Fourth Proportional to 21,564.40, 29,757.24 and 12,131.14

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Solution

The fourth proportional to 21,564.40, 29,757.24 and 12,131.14 is: 16,740.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,564.40 : 29,757.24 = 12,131.14 : x
  2. Step 2: Convert to fraction form
    21,564.40/29,757.24 = 12,131.14/x
  3. Step 3: Cross multiply
    21,564.40x = 29,757.24 × 12,131.14
  4. Step 4: Simplify right side
    21,564.40x = 360,989,244.45
  5. Step 5: Solve for x
    x = 360,989,244.45/21,564.40
  6. Step 6: Final answer
    x = 16,740.06

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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.