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Finding the Fourth Proportional to 27,479.50, 37,921.71 and 15,542.58

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Solution

The fourth proportional to 27,479.50, 37,921.71 and 15,542.58 is: 21,448.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,479.50 : 37,921.71 = 15,542.58 : x
  2. Step 2: Convert to fraction form
    27,479.50/37,921.71 = 15,542.58/x
  3. Step 3: Cross multiply
    27,479.50x = 37,921.71 × 15,542.58
  4. Step 4: Simplify right side
    27,479.50x = 589,401,250.27
  5. Step 5: Solve for x
    x = 589,401,250.27/27,479.50
  6. Step 6: Final answer
    x = 21,448.76

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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.