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Finding the Fourth Proportional to 10,883.79, 15,003.57 and 8,491.08

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Solution

The fourth proportional to 10,883.79, 15,003.57 and 8,491.08 is: 11,705.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,883.79 : 15,003.57 = 8,491.08 : x
  2. Step 2: Convert to fraction form
    10,883.79/15,003.57 = 8,491.08/x
  3. Step 3: Cross multiply
    10,883.79x = 15,003.57 × 8,491.08
  4. Step 4: Simplify right side
    10,883.79x = 127,396,513.16
  5. Step 5: Solve for x
    x = 127,396,513.16/10,883.79
  6. Step 6: Final answer
    x = 11,705.16

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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.