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Finding the Fourth Proportional to 27,887.88, 38,489.78 and 21,523.70

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Solution

The fourth proportional to 27,887.88, 38,489.78 and 21,523.70 is: 29,706.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,887.88 : 38,489.78 = 21,523.70 : x
  2. Step 2: Convert to fraction form
    27,887.88/38,489.78 = 21,523.70/x
  3. Step 3: Cross multiply
    27,887.88x = 38,489.78 × 21,523.70
  4. Step 4: Simplify right side
    27,887.88x = 828,442,477.79
  5. Step 5: Solve for x
    x = 828,442,477.79/27,887.88
  6. Step 6: Final answer
    x = 29,706.18

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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.