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Finding the Fourth Proportional to 28,234.82, 38,962.95 and 15,659.30

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Solution

The fourth proportional to 28,234.82, 38,962.95 and 15,659.30 is: 21,609.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,234.82 : 38,962.95 = 15,659.30 : x
  2. Step 2: Convert to fraction form
    28,234.82/38,962.95 = 15,659.30/x
  3. Step 3: Cross multiply
    28,234.82x = 38,962.95 × 15,659.30
  4. Step 4: Simplify right side
    28,234.82x = 610,132,522.94
  5. Step 5: Solve for x
    x = 610,132,522.94/28,234.82
  6. Step 6: Final answer
    x = 21,609.22

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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.