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Finding the Fourth Proportional to 10,906.79, 15,050.95 and 6,664.94

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Solution

The fourth proportional to 10,906.79, 15,050.95 and 6,664.94 is: 9,197.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,906.79 : 15,050.95 = 6,664.94 : x
  2. Step 2: Convert to fraction form
    10,906.79/15,050.95 = 6,664.94/x
  3. Step 3: Cross multiply
    10,906.79x = 15,050.95 × 6,664.94
  4. Step 4: Simplify right side
    10,906.79x = 100,313,680.71
  5. Step 5: Solve for x
    x = 100,313,680.71/10,906.79
  6. Step 6: Final answer
    x = 9,197.36

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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.