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Finding the Fourth Proportional to 11,466.87, 15,825.03 and 6,431.40

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Solution

The fourth proportional to 11,466.87, 15,825.03 and 6,431.40 is: 8,875.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,466.87 : 15,825.03 = 6,431.40 : x
  2. Step 2: Convert to fraction form
    11,466.87/15,825.03 = 6,431.40/x
  3. Step 3: Cross multiply
    11,466.87x = 15,825.03 × 6,431.40
  4. Step 4: Simplify right side
    11,466.87x = 101,777,097.94
  5. Step 5: Solve for x
    x = 101,777,097.94/11,466.87
  6. Step 6: Final answer
    x = 8,875.75

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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.