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Finding the Fourth Proportional to 28,473.67, 39,293.67 and 15,898.42

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Solution

The fourth proportional to 28,473.67, 39,293.67 and 15,898.42 is: 21,939.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,473.67 : 39,293.67 = 15,898.42 : x
  2. Step 2: Convert to fraction form
    28,473.67/39,293.67 = 15,898.42/x
  3. Step 3: Cross multiply
    28,473.67x = 39,293.67 × 15,898.42
  4. Step 4: Simplify right side
    28,473.67x = 624,707,269.00
  5. Step 5: Solve for x
    x = 624,707,269.00/28,473.67
  6. Step 6: Final answer
    x = 21,939.82

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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.