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Finding the Fourth Proportional to 27,720.72, 38,257.68 and 16,393.68

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Solution

The fourth proportional to 27,720.72, 38,257.68 and 16,393.68 is: 22,625.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,720.72 : 38,257.68 = 16,393.68 : x
  2. Step 2: Convert to fraction form
    27,720.72/38,257.68 = 16,393.68/x
  3. Step 3: Cross multiply
    27,720.72x = 38,257.68 × 16,393.68
  4. Step 4: Simplify right side
    27,720.72x = 627,184,163.46
  5. Step 5: Solve for x
    x = 627,184,163.46/27,720.72
  6. Step 6: Final answer
    x = 22,625.10

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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.