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Finding the Fourth Proportional to 26,665.34, 39,984.59 and 8,889.71

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Solution

The fourth proportional to 26,665.34, 39,984.59 and 8,889.71 is: 13,330.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,665.34 : 39,984.59 = 8,889.71 : x
  2. Step 2: Convert to fraction form
    26,665.34/39,984.59 = 8,889.71/x
  3. Step 3: Cross multiply
    26,665.34x = 39,984.59 × 8,889.71
  4. Step 4: Simplify right side
    26,665.34x = 355,451,409.57
  5. Step 5: Solve for x
    x = 355,451,409.57/26,665.34
  6. Step 6: Final answer
    x = 13,330.09

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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.