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Finding the Fourth Proportional to 9,959.49, 13,749.75 and 6,606.90

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Solution

The fourth proportional to 9,959.49, 13,749.75 and 6,606.90 is: 9,121.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,959.49 : 13,749.75 = 6,606.90 : x
  2. Step 2: Convert to fraction form
    9,959.49/13,749.75 = 6,606.90/x
  3. Step 3: Cross multiply
    9,959.49x = 13,749.75 × 6,606.90
  4. Step 4: Simplify right side
    9,959.49x = 90,843,223.28
  5. Step 5: Solve for x
    x = 90,843,223.28/9,959.49
  6. Step 6: Final answer
    x = 9,121.27

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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.