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Finding the Fourth Proportional to 26,659.68, 39,945.64 and 9,119.92

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Solution

The fourth proportional to 26,659.68, 39,945.64 and 9,119.92 is: 13,664.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,659.68 : 39,945.64 = 9,119.92 : x
  2. Step 2: Convert to fraction form
    26,659.68/39,945.64 = 9,119.92/x
  3. Step 3: Cross multiply
    26,659.68x = 39,945.64 × 9,119.92
  4. Step 4: Simplify right side
    26,659.68x = 364,301,041.15
  5. Step 5: Solve for x
    x = 364,301,041.15/26,659.68
  6. Step 6: Final answer
    x = 13,664.87

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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.