Home / 20,170.35-30,243.17-8,320.46

Finding the Fourth Proportional to 20,170.35, 30,243.17 and 8,320.46

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Solution

The fourth proportional to 20,170.35, 30,243.17 and 8,320.46 is: 12,475.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.35 : 30,243.17 = 8,320.46 : x
  2. Step 2: Convert to fraction form
    20,170.35/30,243.17 = 8,320.46/x
  3. Step 3: Cross multiply
    20,170.35x = 30,243.17 × 8,320.46
  4. Step 4: Simplify right side
    20,170.35x = 251,636,955.84
  5. Step 5: Solve for x
    x = 251,636,955.84/20,170.35
  6. Step 6: Final answer
    x = 12,475.59

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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.