Home / 19,920.42-27,489.87-11,424.06

Finding the Fourth Proportional to 19,920.42, 27,489.87 and 11,424.06

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Solution

The fourth proportional to 19,920.42, 27,489.87 and 11,424.06 is: 15,765.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920.42 : 27,489.87 = 11,424.06 : x
  2. Step 2: Convert to fraction form
    19,920.42/27,489.87 = 11,424.06/x
  3. Step 3: Cross multiply
    19,920.42x = 27,489.87 × 11,424.06
  4. Step 4: Simplify right side
    19,920.42x = 314,045,924.27
  5. Step 5: Solve for x
    x = 314,045,924.27/19,920.42
  6. Step 6: Final answer
    x = 15,765.03

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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.