Home / 22,189.87-30,585.49-15,731.64

Finding the Fourth Proportional to 22,189.87, 30,585.49 and 15,731.64

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Solution

The fourth proportional to 22,189.87, 30,585.49 and 15,731.64 is: 21,683.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,189.87 : 30,585.49 = 15,731.64 : x
  2. Step 2: Convert to fraction form
    22,189.87/30,585.49 = 15,731.64/x
  3. Step 3: Cross multiply
    22,189.87x = 30,585.49 × 15,731.64
  4. Step 4: Simplify right side
    22,189.87x = 481,159,917.90
  5. Step 5: Solve for x
    x = 481,159,917.90/22,189.87
  6. Step 6: Final answer
    x = 21,683.76

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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.