Home / 15,418.83-21,278.39-9,453.79

Finding the Fourth Proportional to 15,418.83, 21,278.39 and 9,453.79

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Solution

The fourth proportional to 15,418.83, 21,278.39 and 9,453.79 is: 13,046.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,418.83 : 21,278.39 = 9,453.79 : x
  2. Step 2: Convert to fraction form
    15,418.83/21,278.39 = 9,453.79/x
  3. Step 3: Cross multiply
    15,418.83x = 21,278.39 × 9,453.79
  4. Step 4: Simplify right side
    15,418.83x = 201,161,409.93
  5. Step 5: Solve for x
    x = 201,161,409.93/15,418.83
  6. Step 6: Final answer
    x = 13,046.47

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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.