Home / 20,385.36-30,572.28-7,230.60

Finding the Fourth Proportional to 20,385.36, 30,572.28 and 7,230.60

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Solution

The fourth proportional to 20,385.36, 30,572.28 and 7,230.60 is: 10,843.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,385.36 : 30,572.28 = 7,230.60 : x
  2. Step 2: Convert to fraction form
    20,385.36/30,572.28 = 7,230.60/x
  3. Step 3: Cross multiply
    20,385.36x = 30,572.28 × 7,230.60
  4. Step 4: Simplify right side
    20,385.36x = 221,055,927.77
  5. Step 5: Solve for x
    x = 221,055,927.77/20,385.36
  6. Step 6: Final answer
    x = 10,843.86

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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.