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Finding the Fourth Proportional to 18,530.30, 27,763.11 and 15,430.25

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Solution

The fourth proportional to 18,530.30, 27,763.11 and 15,430.25 is: 23,118.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,530.30 : 27,763.11 = 15,430.25 : x
  2. Step 2: Convert to fraction form
    18,530.30/27,763.11 = 15,430.25/x
  3. Step 3: Cross multiply
    18,530.30x = 27,763.11 × 15,430.25
  4. Step 4: Simplify right side
    18,530.30x = 428,391,589.26
  5. Step 5: Solve for x
    x = 428,391,589.26/18,530.30
  6. Step 6: Final answer
    x = 23,118.44

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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.