Home / 20,167.49-27,816.56-15,551.22

Finding the Fourth Proportional to 20,167.49, 27,816.56 and 15,551.22

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Solution

The fourth proportional to 20,167.49, 27,816.56 and 15,551.22 is: 21,449.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,167.49 : 27,816.56 = 15,551.22 : x
  2. Step 2: Convert to fraction form
    20,167.49/27,816.56 = 15,551.22/x
  3. Step 3: Cross multiply
    20,167.49x = 27,816.56 × 15,551.22
  4. Step 4: Simplify right side
    20,167.49x = 432,581,444.20
  5. Step 5: Solve for x
    x = 432,581,444.20/20,167.49
  6. Step 6: Final answer
    x = 21,449.44

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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.