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Finding the Fourth Proportional to 28,971.40, 43,424.70 and 16,497.40

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Solution

The fourth proportional to 28,971.40, 43,424.70 and 16,497.40 is: 24,727.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,971.40 : 43,424.70 = 16,497.40 : x
  2. Step 2: Convert to fraction form
    28,971.40/43,424.70 = 16,497.40/x
  3. Step 3: Cross multiply
    28,971.40x = 43,424.70 × 16,497.40
  4. Step 4: Simplify right side
    28,971.40x = 716,394,645.78
  5. Step 5: Solve for x
    x = 716,394,645.78/28,971.40
  6. Step 6: Final answer
    x = 24,727.65

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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.