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Finding the Fourth Proportional to 27,665.99, 38,176.49 and 15,726.99

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Solution

The fourth proportional to 27,665.99, 38,176.49 and 15,726.99 is: 21,701.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,665.99 : 38,176.49 = 15,726.99 : x
  2. Step 2: Convert to fraction form
    27,665.99/38,176.49 = 15,726.99/x
  3. Step 3: Cross multiply
    27,665.99x = 38,176.49 × 15,726.99
  4. Step 4: Simplify right side
    27,665.99x = 600,401,276.47
  5. Step 5: Solve for x
    x = 600,401,276.47/27,665.99
  6. Step 6: Final answer
    x = 21,701.78

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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.