Home / 18,642.12-25,721.89-13,609.08

Finding the Fourth Proportional to 18,642.12, 25,721.89 and 13,609.08

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Solution

The fourth proportional to 18,642.12, 25,721.89 and 13,609.08 is: 18,777.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,642.12 : 25,721.89 = 13,609.08 : x
  2. Step 2: Convert to fraction form
    18,642.12/25,721.89 = 13,609.08/x
  3. Step 3: Cross multiply
    18,642.12x = 25,721.89 × 13,609.08
  4. Step 4: Simplify right side
    18,642.12x = 350,051,258.76
  5. Step 5: Solve for x
    x = 350,051,258.76/18,642.12
  6. Step 6: Final answer
    x = 18,777.44

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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.