Home / 20,257.20-30,385.80-15,336.45

Finding the Fourth Proportional to 20,257.20, 30,385.80 and 15,336.45

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Solution

The fourth proportional to 20,257.20, 30,385.80 and 15,336.45 is: 23,004.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,257.20 : 30,385.80 = 15,336.45 : x
  2. Step 2: Convert to fraction form
    20,257.20/30,385.80 = 15,336.45/x
  3. Step 3: Cross multiply
    20,257.20x = 30,385.80 × 15,336.45
  4. Step 4: Simplify right side
    20,257.20x = 466,010,302.41
  5. Step 5: Solve for x
    x = 466,010,302.41/20,257.20
  6. Step 6: Final answer
    x = 23,004.68

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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.