Home / 22,173.84-30,606.12-13,218.48

Finding the Fourth Proportional to 22,173.84, 30,606.12 and 13,218.48

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Solution

The fourth proportional to 22,173.84, 30,606.12 and 13,218.48 is: 18,245.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,173.84 : 30,606.12 = 13,218.48 : x
  2. Step 2: Convert to fraction form
    22,173.84/30,606.12 = 13,218.48/x
  3. Step 3: Cross multiply
    22,173.84x = 30,606.12 × 13,218.48
  4. Step 4: Simplify right side
    22,173.84x = 404,566,385.10
  5. Step 5: Solve for x
    x = 404,566,385.10/22,173.84
  6. Step 6: Final answer
    x = 18,245.21

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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.