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Finding the Fourth Proportional to 10,969.88, 15,138.06 and 6,255.68

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Solution

The fourth proportional to 10,969.88, 15,138.06 and 6,255.68 is: 8,632.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,969.88 : 15,138.06 = 6,255.68 : x
  2. Step 2: Convert to fraction form
    10,969.88/15,138.06 = 6,255.68/x
  3. Step 3: Cross multiply
    10,969.88x = 15,138.06 × 6,255.68
  4. Step 4: Simplify right side
    10,969.88x = 94,698,859.18
  5. Step 5: Solve for x
    x = 94,698,859.18/10,969.88
  6. Step 6: Final answer
    x = 8,632.62

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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.