Home / 20,146.39-30,219.55-5,355.31

Finding the Fourth Proportional to 20,146.39, 30,219.55 and 5,355.31

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Solution

The fourth proportional to 20,146.39, 30,219.55 and 5,355.31 is: 8,032.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,146.39 : 30,219.55 = 5,355.31 : x
  2. Step 2: Convert to fraction form
    20,146.39/30,219.55 = 5,355.31/x
  3. Step 3: Cross multiply
    20,146.39x = 30,219.55 × 5,355.31
  4. Step 4: Simplify right side
    20,146.39x = 161,835,058.31
  5. Step 5: Solve for x
    x = 161,835,058.31/20,146.39
  6. Step 6: Final answer
    x = 8,032.96

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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.