Home / 20,270.15-30,378.86-8,248.30

Finding the Fourth Proportional to 20,270.15, 30,378.86 and 8,248.30

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Solution

The fourth proportional to 20,270.15, 30,378.86 and 8,248.30 is: 12,361.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,270.15 : 30,378.86 = 8,248.30 : x
  2. Step 2: Convert to fraction form
    20,270.15/30,378.86 = 8,248.30/x
  3. Step 3: Cross multiply
    20,270.15x = 30,378.86 × 8,248.30
  4. Step 4: Simplify right side
    20,270.15x = 250,573,950.94
  5. Step 5: Solve for x
    x = 250,573,950.94/20,270.15
  6. Step 6: Final answer
    x = 12,361.72

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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.