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Finding the Fourth Proportional to 27,478.88, 37,926.52 and 15,542.72

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Solution

The fourth proportional to 27,478.88, 37,926.52 and 15,542.72 is: 21,452.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,478.88 : 37,926.52 = 15,542.72 : x
  2. Step 2: Convert to fraction form
    27,478.88/37,926.52 = 15,542.72/x
  3. Step 3: Cross multiply
    27,478.88x = 37,926.52 × 15,542.72
  4. Step 4: Simplify right side
    27,478.88x = 589,481,280.93
  5. Step 5: Solve for x
    x = 589,481,280.93/27,478.88
  6. Step 6: Final answer
    x = 21,452.16

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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.