Home / 19,981.15-27,572.81-11,028.42

Finding the Fourth Proportional to 19,981.15, 27,572.81 and 11,028.42

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Solution

The fourth proportional to 19,981.15, 27,572.81 and 11,028.42 is: 15,218.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,981.15 : 27,572.81 = 11,028.42 : x
  2. Step 2: Convert to fraction form
    19,981.15/27,572.81 = 11,028.42/x
  3. Step 3: Cross multiply
    19,981.15x = 27,572.81 × 11,028.42
  4. Step 4: Simplify right side
    19,981.15x = 304,084,474.12
  5. Step 5: Solve for x
    x = 304,084,474.12/19,981.15
  6. Step 6: Final answer
    x = 15,218.57

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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.