Home / 15,918.62-21,972.72-10,880.97

Finding the Fourth Proportional to 15,918.62, 21,972.72 and 10,880.97

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Solution

The fourth proportional to 15,918.62, 21,972.72 and 10,880.97 is: 15,019.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,918.62 : 21,972.72 = 10,880.97 : x
  2. Step 2: Convert to fraction form
    15,918.62/21,972.72 = 10,880.97/x
  3. Step 3: Cross multiply
    15,918.62x = 21,972.72 × 10,880.97
  4. Step 4: Simplify right side
    15,918.62x = 239,084,507.14
  5. Step 5: Solve for x
    x = 239,084,507.14/15,918.62
  6. Step 6: Final answer
    x = 15,019.18

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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.