Home / 20,255.30-30,387.84-7,605.16

Finding the Fourth Proportional to 20,255.30, 30,387.84 and 7,605.16

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Solution

The fourth proportional to 20,255.30, 30,387.84 and 7,605.16 is: 11,409.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,255.30 : 30,387.84 = 7,605.16 : x
  2. Step 2: Convert to fraction form
    20,255.30/30,387.84 = 7,605.16/x
  3. Step 3: Cross multiply
    20,255.30x = 30,387.84 × 7,605.16
  4. Step 4: Simplify right side
    20,255.30x = 231,104,385.25
  5. Step 5: Solve for x
    x = 231,104,385.25/20,255.30
  6. Step 6: Final answer
    x = 11,409.58

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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.