Home / 20,165.49-27,813.80-15,549.22

Finding the Fourth Proportional to 20,165.49, 27,813.80 and 15,549.22

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Solution

The fourth proportional to 20,165.49, 27,813.80 and 15,549.22 is: 21,446.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,165.49 : 27,813.80 = 15,549.22 : x
  2. Step 2: Convert to fraction form
    20,165.49/27,813.80 = 15,549.22/x
  3. Step 3: Cross multiply
    20,165.49x = 27,813.80 × 15,549.22
  4. Step 4: Simplify right side
    20,165.49x = 432,482,724.96
  5. Step 5: Solve for x
    x = 432,482,724.96/20,165.49
  6. Step 6: Final answer
    x = 21,446.68

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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.