Home / 21,886.38-30,161.04-15,908.58

Finding the Fourth Proportional to 21,886.38, 30,161.04 and 15,908.58

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Solution

The fourth proportional to 21,886.38, 30,161.04 and 15,908.58 is: 21,923.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,886.38 : 30,161.04 = 15,908.58 : x
  2. Step 2: Convert to fraction form
    21,886.38/30,161.04 = 15,908.58/x
  3. Step 3: Cross multiply
    21,886.38x = 30,161.04 × 15,908.58
  4. Step 4: Simplify right side
    21,886.38x = 479,819,317.72
  5. Step 5: Solve for x
    x = 479,819,317.72/21,886.38
  6. Step 6: Final answer
    x = 21,923.19

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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.