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Finding the Fourth Proportional to 27,630, 38,129.40 and 15,054.75

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Solution

The fourth proportional to 27,630, 38,129.40 and 15,054.75 is: 20,775.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,630 : 38,129.40 = 15,054.75 : x
  2. Step 2: Convert to fraction form
    27,630/38,129.40 = 15,054.75/x
  3. Step 3: Cross multiply
    27,630x = 38,129.40 × 15,054.75
  4. Step 4: Simplify right side
    27,630x = 574,028,584.65
  5. Step 5: Solve for x
    x = 574,028,584.65/27,630
  6. Step 6: Final answer
    x = 20,775.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.