Home / 20,258.80-30,401.66-7,111.24

Finding the Fourth Proportional to 20,258.80, 30,401.66 and 7,111.24

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Solution

The fourth proportional to 20,258.80, 30,401.66 and 7,111.24 is: 10,671.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,258.80 : 30,401.66 = 7,111.24 : x
  2. Step 2: Convert to fraction form
    20,258.80/30,401.66 = 7,111.24/x
  3. Step 3: Cross multiply
    20,258.80x = 30,401.66 × 7,111.24
  4. Step 4: Simplify right side
    20,258.80x = 216,193,500.66
  5. Step 5: Solve for x
    x = 216,193,500.66/20,258.80
  6. Step 6: Final answer
    x = 10,671.58

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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.