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Finding the Fourth Proportional to 28,524, 39,362.18 and 15,776.98

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Solution

The fourth proportional to 28,524, 39,362.18 and 15,776.98 is: 21,771.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,524 : 39,362.18 = 15,776.98 : x
  2. Step 2: Convert to fraction form
    28,524/39,362.18 = 15,776.98/x
  3. Step 3: Cross multiply
    28,524x = 39,362.18 × 15,776.98
  4. Step 4: Simplify right side
    28,524x = 621,016,326.62
  5. Step 5: Solve for x
    x = 621,016,326.62/28,524
  6. Step 6: Final answer
    x = 21,771.71

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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.