Home / 18,918.98-26,108.18-10,965.81

Finding the Fourth Proportional to 18,918.98, 26,108.18 and 10,965.81

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Solution

The fourth proportional to 18,918.98, 26,108.18 and 10,965.81 is: 15,132.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,918.98 : 26,108.18 = 10,965.81 : x
  2. Step 2: Convert to fraction form
    18,918.98/26,108.18 = 10,965.81/x
  3. Step 3: Cross multiply
    18,918.98x = 26,108.18 × 10,965.81
  4. Step 4: Simplify right side
    18,918.98x = 286,297,286.50
  5. Step 5: Solve for x
    x = 286,297,286.50/18,918.98
  6. Step 6: Final answer
    x = 15,132.81

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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.