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Finding the Fourth Proportional to 28,391.50, 42,574.27 and 10,609.11

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Solution

The fourth proportional to 28,391.50, 42,574.27 and 10,609.11 is: 15,908.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,391.50 : 42,574.27 = 10,609.11 : x
  2. Step 2: Convert to fraction form
    28,391.50/42,574.27 = 10,609.11/x
  3. Step 3: Cross multiply
    28,391.50x = 42,574.27 × 10,609.11
  4. Step 4: Simplify right side
    28,391.50x = 451,675,113.60
  5. Step 5: Solve for x
    x = 451,675,113.60/28,391.50
  6. Step 6: Final answer
    x = 15,908.81

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1.5x scale

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.