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Finding the Fourth Proportional to 28,187.65, 38,820.22 and 27,575.29

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Solution

The fourth proportional to 28,187.65, 38,820.22 and 27,575.29 is: 37,976.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,187.65 : 38,820.22 = 27,575.29 : x
  2. Step 2: Convert to fraction form
    28,187.65/38,820.22 = 27,575.29/x
  3. Step 3: Cross multiply
    28,187.65x = 38,820.22 × 27,575.29
  4. Step 4: Simplify right side
    28,187.65x = 1,070,478,824.36
  5. Step 5: Solve for x
    x = 1,070,478,824.36/28,187.65
  6. Step 6: Final answer
    x = 37,976.87

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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.