Home / 20,480.02-30,713.14-7,826.80

Finding the Fourth Proportional to 20,480.02, 30,713.14 and 7,826.80

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Solution

The fourth proportional to 20,480.02, 30,713.14 and 7,826.80 is: 11,737.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,480.02 : 30,713.14 = 7,826.80 : x
  2. Step 2: Convert to fraction form
    20,480.02/30,713.14 = 7,826.80/x
  3. Step 3: Cross multiply
    20,480.02x = 30,713.14 × 7,826.80
  4. Step 4: Simplify right side
    20,480.02x = 240,385,604.15
  5. Step 5: Solve for x
    x = 240,385,604.15/20,480.02
  6. Step 6: Final answer
    x = 11,737.57

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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.