Home / 13,921.20-20,879.56-4,058.16

Finding the Fourth Proportional to 13,921.20, 20,879.56 and 4,058.16

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Solution

The fourth proportional to 13,921.20, 20,879.56 and 4,058.16 is: 6,086.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.20 : 20,879.56 = 4,058.16 : x
  2. Step 2: Convert to fraction form
    13,921.20/20,879.56 = 4,058.16/x
  3. Step 3: Cross multiply
    13,921.20x = 20,879.56 × 4,058.16
  4. Step 4: Simplify right side
    13,921.20x = 84,732,595.21
  5. Step 5: Solve for x
    x = 84,732,595.21/13,921.20
  6. Step 6: Final answer
    x = 6,086.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.