Home / 20,153.20-30,215.40-9,050.80

Finding the Fourth Proportional to 20,153.20, 30,215.40 and 9,050.80

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Solution

The fourth proportional to 20,153.20, 30,215.40 and 9,050.80 is: 13,569.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,153.20 : 30,215.40 = 9,050.80 : x
  2. Step 2: Convert to fraction form
    20,153.20/30,215.40 = 9,050.80/x
  3. Step 3: Cross multiply
    20,153.20x = 30,215.40 × 9,050.80
  4. Step 4: Simplify right side
    20,153.20x = 273,473,542.32
  5. Step 5: Solve for x
    x = 273,473,542.32/20,153.20
  6. Step 6: Final answer
    x = 13,569.73

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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.