Home / 20,440.50-30,481.86-20,253.66

Finding the Fourth Proportional to 20,440.50, 30,481.86 and 20,253.66

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Solution

The fourth proportional to 20,440.50, 30,481.86 and 20,253.66 is: 30,203.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440.50 : 30,481.86 = 20,253.66 : x
  2. Step 2: Convert to fraction form
    20,440.50/30,481.86 = 20,253.66/x
  3. Step 3: Cross multiply
    20,440.50x = 30,481.86 × 20,253.66
  4. Step 4: Simplify right side
    20,440.50x = 617,369,228.61
  5. Step 5: Solve for x
    x = 617,369,228.61/20,440.50
  6. Step 6: Final answer
    x = 30,203.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.