Home / 21,774.96-30,042.12-15,058.16

Finding the Fourth Proportional to 21,774.96, 30,042.12 and 15,058.16

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Solution

The fourth proportional to 21,774.96, 30,042.12 and 15,058.16 is: 20,775.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,774.96 : 30,042.12 = 15,058.16 : x
  2. Step 2: Convert to fraction form
    21,774.96/30,042.12 = 15,058.16/x
  3. Step 3: Cross multiply
    21,774.96x = 30,042.12 × 15,058.16
  4. Step 4: Simplify right side
    21,774.96x = 452,379,049.70
  5. Step 5: Solve for x
    x = 452,379,049.70/21,774.96
  6. Step 6: Final answer
    x = 20,775.20

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1.5x scale

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.