Home / 18,919.74-26,108.96-10,961.79

Finding the Fourth Proportional to 18,919.74, 26,108.96 and 10,961.79

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Solution

The fourth proportional to 18,919.74, 26,108.96 and 10,961.79 is: 15,127.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,919.74 : 26,108.96 = 10,961.79 : x
  2. Step 2: Convert to fraction form
    18,919.74/26,108.96 = 10,961.79/x
  3. Step 3: Cross multiply
    18,919.74x = 26,108.96 × 10,961.79
  4. Step 4: Simplify right side
    18,919.74x = 286,200,936.64
  5. Step 5: Solve for x
    x = 286,200,936.64/18,919.74
  6. Step 6: Final answer
    x = 15,127.11

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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.