Home / 18,177.30-25,097.10-13,920.84

Finding the Fourth Proportional to 18,177.30, 25,097.10 and 13,920.84

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Solution

The fourth proportional to 18,177.30, 25,097.10 and 13,920.84 is: 19,220.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,177.30 : 25,097.10 = 13,920.84 : x
  2. Step 2: Convert to fraction form
    18,177.30/25,097.10 = 13,920.84/x
  3. Step 3: Cross multiply
    18,177.30x = 25,097.10 × 13,920.84
  4. Step 4: Simplify right side
    18,177.30x = 349,372,713.56
  5. Step 5: Solve for x
    x = 349,372,713.56/18,177.30
  6. Step 6: Final answer
    x = 19,220.28

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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.