Home / 20,418.40-28,174.35-11,464.18

Finding the Fourth Proportional to 20,418.40, 28,174.35 and 11,464.18

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Solution

The fourth proportional to 20,418.40, 28,174.35 and 11,464.18 is: 15,818.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,418.40 : 28,174.35 = 11,464.18 : x
  2. Step 2: Convert to fraction form
    20,418.40/28,174.35 = 11,464.18/x
  3. Step 3: Cross multiply
    20,418.40x = 28,174.35 × 11,464.18
  4. Step 4: Simplify right side
    20,418.40x = 322,995,792.34
  5. Step 5: Solve for x
    x = 322,995,792.34/20,418.40
  6. Step 6: Final answer
    x = 15,818.86

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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.