Home / 21,277.49-31,944.51-18,177.42

Finding the Fourth Proportional to 21,277.49, 31,944.51 and 18,177.42

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Solution

The fourth proportional to 21,277.49, 31,944.51 and 18,177.42 is: 27,290.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,277.49 : 31,944.51 = 18,177.42 : x
  2. Step 2: Convert to fraction form
    21,277.49/31,944.51 = 18,177.42/x
  3. Step 3: Cross multiply
    21,277.49x = 31,944.51 × 18,177.42
  4. Step 4: Simplify right side
    21,277.49x = 580,668,774.96
  5. Step 5: Solve for x
    x = 580,668,774.96/21,277.49
  6. Step 6: Final answer
    x = 27,290.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.