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Finding the Fourth Proportional to 28,226.78, 38,952.03 and 15,652.46

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Solution

The fourth proportional to 28,226.78, 38,952.03 and 15,652.46 is: 21,599.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,226.78 : 38,952.03 = 15,652.46 : x
  2. Step 2: Convert to fraction form
    28,226.78/38,952.03 = 15,652.46/x
  3. Step 3: Cross multiply
    28,226.78x = 38,952.03 × 15,652.46
  4. Step 4: Simplify right side
    28,226.78x = 609,695,091.49
  5. Step 5: Solve for x
    x = 609,695,091.49/28,226.78
  6. Step 6: Final answer
    x = 21,599.88

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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.