Home / 20,278.34-27,982.22-13,108.42

Finding the Fourth Proportional to 20,278.34, 27,982.22 and 13,108.42

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Solution

The fourth proportional to 20,278.34, 27,982.22 and 13,108.42 is: 18,088.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278.34 : 27,982.22 = 13,108.42 : x
  2. Step 2: Convert to fraction form
    20,278.34/27,982.22 = 13,108.42/x
  3. Step 3: Cross multiply
    20,278.34x = 27,982.22 × 13,108.42
  4. Step 4: Simplify right side
    20,278.34x = 366,802,692.29
  5. Step 5: Solve for x
    x = 366,802,692.29/20,278.34
  6. Step 6: Final answer
    x = 18,088.40

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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.