Home / 22,189.68-30,614.49-15,817.28

Finding the Fourth Proportional to 22,189.68, 30,614.49 and 15,817.28

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Solution

The fourth proportional to 22,189.68, 30,614.49 and 15,817.28 is: 21,822.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,189.68 : 30,614.49 = 15,817.28 : x
  2. Step 2: Convert to fraction form
    22,189.68/30,614.49 = 15,817.28/x
  3. Step 3: Cross multiply
    22,189.68x = 30,614.49 × 15,817.28
  4. Step 4: Simplify right side
    22,189.68x = 484,237,807.31
  5. Step 5: Solve for x
    x = 484,237,807.31/22,189.68
  6. Step 6: Final answer
    x = 21,822.66

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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.