Home / 20,442.56-28,234.40-13,400.48

Finding the Fourth Proportional to 20,442.56, 28,234.40 and 13,400.48

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Solution

The fourth proportional to 20,442.56, 28,234.40 and 13,400.48 is: 18,508.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,442.56 : 28,234.40 = 13,400.48 : x
  2. Step 2: Convert to fraction form
    20,442.56/28,234.40 = 13,400.48/x
  3. Step 3: Cross multiply
    20,442.56x = 28,234.40 × 13,400.48
  4. Step 4: Simplify right side
    20,442.56x = 378,354,512.51
  5. Step 5: Solve for x
    x = 378,354,512.51/20,442.56
  6. Step 6: Final answer
    x = 18,508.18

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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.