Home / 21,744.88-30,012.19-12,800.05

Finding the Fourth Proportional to 21,744.88, 30,012.19 and 12,800.05

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Solution

The fourth proportional to 21,744.88, 30,012.19 and 12,800.05 is: 17,666.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,744.88 : 30,012.19 = 12,800.05 : x
  2. Step 2: Convert to fraction form
    21,744.88/30,012.19 = 12,800.05/x
  3. Step 3: Cross multiply
    21,744.88x = 30,012.19 × 12,800.05
  4. Step 4: Simplify right side
    21,744.88x = 384,157,425.58
  5. Step 5: Solve for x
    x = 384,157,425.58/21,744.88
  6. Step 6: Final answer
    x = 17,666.57

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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.