Home / 21,920.18-30,249.98-11,848.59

Finding the Fourth Proportional to 21,920.18, 30,249.98 and 11,848.59

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Solution

The fourth proportional to 21,920.18, 30,249.98 and 11,848.59 is: 16,351.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,920.18 : 30,249.98 = 11,848.59 : x
  2. Step 2: Convert to fraction form
    21,920.18/30,249.98 = 11,848.59/x
  3. Step 3: Cross multiply
    21,920.18x = 30,249.98 × 11,848.59
  4. Step 4: Simplify right side
    21,920.18x = 358,419,610.53
  5. Step 5: Solve for x
    x = 358,419,610.53/21,920.18
  6. Step 6: Final answer
    x = 16,351.13

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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.