Home / 19,338.56-26,690.82-11,380.40

Finding the Fourth Proportional to 19,338.56, 26,690.82 and 11,380.40

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Solution

The fourth proportional to 19,338.56, 26,690.82 and 11,380.40 is: 15,707.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,338.56 : 26,690.82 = 11,380.40 : x
  2. Step 2: Convert to fraction form
    19,338.56/26,690.82 = 11,380.40/x
  3. Step 3: Cross multiply
    19,338.56x = 26,690.82 × 11,380.40
  4. Step 4: Simplify right side
    19,338.56x = 303,752,207.93
  5. Step 5: Solve for x
    x = 303,752,207.93/19,338.56
  6. Step 6: Final answer
    x = 15,707.07

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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.