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Finding the Fourth Proportional to 8,911.64, 13,330.52 and 8,099.71

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Solution

The fourth proportional to 8,911.64, 13,330.52 and 8,099.71 is: 12,116.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,911.64 : 13,330.52 = 8,099.71 : x
  2. Step 2: Convert to fraction form
    8,911.64/13,330.52 = 8,099.71/x
  3. Step 3: Cross multiply
    8,911.64x = 13,330.52 × 8,099.71
  4. Step 4: Simplify right side
    8,911.64x = 107,973,383.06
  5. Step 5: Solve for x
    x = 107,973,383.06/8,911.64
  6. Step 6: Final answer
    x = 12,116.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.