Home / 20,108.55-30,155.82-8,258.95

Finding the Fourth Proportional to 20,108.55, 30,155.82 and 8,258.95

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Solution

The fourth proportional to 20,108.55, 30,155.82 and 8,258.95 is: 12,385.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.55 : 30,155.82 = 8,258.95 : x
  2. Step 2: Convert to fraction form
    20,108.55/30,155.82 = 8,258.95/x
  3. Step 3: Cross multiply
    20,108.55x = 30,155.82 × 8,258.95
  4. Step 4: Simplify right side
    20,108.55x = 249,055,409.59
  5. Step 5: Solve for x
    x = 249,055,409.59/20,108.55
  6. Step 6: Final answer
    x = 12,385.55

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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.