Home / 18,918.06-26,105.67-10,958.87

Finding the Fourth Proportional to 18,918.06, 26,105.67 and 10,958.87

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Solution

The fourth proportional to 18,918.06, 26,105.67 and 10,958.87 is: 15,122.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,918.06 : 26,105.67 = 10,958.87 : x
  2. Step 2: Convert to fraction form
    18,918.06/26,105.67 = 10,958.87/x
  3. Step 3: Cross multiply
    18,918.06x = 26,105.67 × 10,958.87
  4. Step 4: Simplify right side
    18,918.06x = 286,088,513.26
  5. Step 5: Solve for x
    x = 286,088,513.26/18,918.06
  6. Step 6: Final answer
    x = 15,122.51

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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.