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Finding the Fourth Proportional to 10,969.71, 15,138.14 and 6,253.89

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Solution

The fourth proportional to 10,969.71, 15,138.14 and 6,253.89 is: 8,630.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,969.71 : 15,138.14 = 6,253.89 : x
  2. Step 2: Convert to fraction form
    10,969.71/15,138.14 = 6,253.89/x
  3. Step 3: Cross multiply
    10,969.71x = 15,138.14 × 6,253.89
  4. Step 4: Simplify right side
    10,969.71x = 94,672,231.10
  5. Step 5: Solve for x
    x = 94,672,231.10/10,969.71
  6. Step 6: Final answer
    x = 8,630.33

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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.