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Finding the Fourth Proportional to 21,528.73, 32,279.88 and 8,365.73

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Solution

The fourth proportional to 21,528.73, 32,279.88 and 8,365.73 is: 12,543.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,528.73 : 32,279.88 = 8,365.73 : x
  2. Step 2: Convert to fraction form
    21,528.73/32,279.88 = 8,365.73/x
  3. Step 3: Cross multiply
    21,528.73x = 32,279.88 × 8,365.73
  4. Step 4: Simplify right side
    21,528.73x = 270,044,760.51
  5. Step 5: Solve for x
    x = 270,044,760.51/21,528.73
  6. Step 6: Final answer
    x = 12,543.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.