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Finding the Fourth Proportional to 26,613.89, 39,914.02 and 7,889.54

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Solution

The fourth proportional to 26,613.89, 39,914.02 and 7,889.54 is: 11,832.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,613.89 : 39,914.02 = 7,889.54 : x
  2. Step 2: Convert to fraction form
    26,613.89/39,914.02 = 7,889.54/x
  3. Step 3: Cross multiply
    26,613.89x = 39,914.02 × 7,889.54
  4. Step 4: Simplify right side
    26,613.89x = 314,903,337.41
  5. Step 5: Solve for x
    x = 314,903,337.41/26,613.89
  6. Step 6: Final answer
    x = 11,832.29

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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.