Home / 21,121.62-31,667.51-10,584.14

Finding the Fourth Proportional to 21,121.62, 31,667.51 and 10,584.14

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Solution

The fourth proportional to 21,121.62, 31,667.51 and 10,584.14 is: 15,868.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,121.62 : 31,667.51 = 10,584.14 : x
  2. Step 2: Convert to fraction form
    21,121.62/31,667.51 = 10,584.14/x
  3. Step 3: Cross multiply
    21,121.62x = 31,667.51 × 10,584.14
  4. Step 4: Simplify right side
    21,121.62x = 335,173,148.03
  5. Step 5: Solve for x
    x = 335,173,148.03/21,121.62
  6. Step 6: Final answer
    x = 15,868.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.