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Finding the Fourth Proportional to 28,971.82, 43,477.19 and 10,251.78

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Solution

The fourth proportional to 28,971.82, 43,477.19 and 10,251.78 is: 15,384.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,971.82 : 43,477.19 = 10,251.78 : x
  2. Step 2: Convert to fraction form
    28,971.82/43,477.19 = 10,251.78/x
  3. Step 3: Cross multiply
    28,971.82x = 43,477.19 × 10,251.78
  4. Step 4: Simplify right side
    28,971.82x = 445,718,586.90
  5. Step 5: Solve for x
    x = 445,718,586.90/28,971.82
  6. Step 6: Final answer
    x = 15,384.56

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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.