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Finding the Fourth Proportional to 27,874.88, 38,482.26 and 21,487.52

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Solution

The fourth proportional to 27,874.88, 38,482.26 and 21,487.52 is: 29,664.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,874.88 : 38,482.26 = 21,487.52 : x
  2. Step 2: Convert to fraction form
    27,874.88/38,482.26 = 21,487.52/x
  3. Step 3: Cross multiply
    27,874.88x = 38,482.26 × 21,487.52
  4. Step 4: Simplify right side
    27,874.88x = 826,888,331.40
  5. Step 5: Solve for x
    x = 826,888,331.40/27,874.88
  6. Step 6: Final answer
    x = 29,664.28

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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.