Home / 22,278.97-30,749.79-13,328.47

Finding the Fourth Proportional to 22,278.97, 30,749.79 and 13,328.47

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Solution

The fourth proportional to 22,278.97, 30,749.79 and 13,328.47 is: 18,396.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,278.97 : 30,749.79 = 13,328.47 : x
  2. Step 2: Convert to fraction form
    22,278.97/30,749.79 = 13,328.47/x
  3. Step 3: Cross multiply
    22,278.97x = 30,749.79 × 13,328.47
  4. Step 4: Simplify right side
    22,278.97x = 409,847,653.52
  5. Step 5: Solve for x
    x = 409,847,653.52/22,278.97
  6. Step 6: Final answer
    x = 18,396.17

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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.