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Finding the Fourth Proportional to 27,478.32, 37,919.37 and 15,213.30

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Solution

The fourth proportional to 27,478.32, 37,919.37 and 15,213.30 is: 20,993.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,478.32 : 37,919.37 = 15,213.30 : x
  2. Step 2: Convert to fraction form
    27,478.32/37,919.37 = 15,213.30/x
  3. Step 3: Cross multiply
    27,478.32x = 37,919.37 × 15,213.30
  4. Step 4: Simplify right side
    27,478.32x = 576,878,751.62
  5. Step 5: Solve for x
    x = 576,878,751.62/27,478.32
  6. Step 6: Final answer
    x = 20,993.96

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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.