Home / 21,318.58-29,427.75-16,028.76

Finding the Fourth Proportional to 21,318.58, 29,427.75 and 16,028.76

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Solution

The fourth proportional to 21,318.58, 29,427.75 and 16,028.76 is: 22,125.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,318.58 : 29,427.75 = 16,028.76 : x
  2. Step 2: Convert to fraction form
    21,318.58/29,427.75 = 16,028.76/x
  3. Step 3: Cross multiply
    21,318.58x = 29,427.75 × 16,028.76
  4. Step 4: Simplify right side
    21,318.58x = 471,690,342.09
  5. Step 5: Solve for x
    x = 471,690,342.09/21,318.58
  6. Step 6: Final answer
    x = 22,125.79

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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.