Home / 20,258.66-30,401.57-7,111.07

Finding the Fourth Proportional to 20,258.66, 30,401.57 and 7,111.07

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Solution

The fourth proportional to 20,258.66, 30,401.57 and 7,111.07 is: 10,671.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,258.66 : 30,401.57 = 7,111.07 : x
  2. Step 2: Convert to fraction form
    20,258.66/30,401.57 = 7,111.07/x
  3. Step 3: Cross multiply
    20,258.66x = 30,401.57 × 7,111.07
  4. Step 4: Simplify right side
    20,258.66x = 216,187,558.15
  5. Step 5: Solve for x
    x = 216,187,558.15/20,258.66
  6. Step 6: Final answer
    x = 10,671.37

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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.