Home / 21,998.87-30,358.35-11,927.28

Finding the Fourth Proportional to 21,998.87, 30,358.35 and 11,927.28

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Solution

The fourth proportional to 21,998.87, 30,358.35 and 11,927.28 is: 16,459.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,998.87 : 30,358.35 = 11,927.28 : x
  2. Step 2: Convert to fraction form
    21,998.87/30,358.35 = 11,927.28/x
  3. Step 3: Cross multiply
    21,998.87x = 30,358.35 × 11,927.28
  4. Step 4: Simplify right side
    21,998.87x = 362,092,481.15
  5. Step 5: Solve for x
    x = 362,092,481.15/21,998.87
  6. Step 6: Final answer
    x = 16,459.59

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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.