Home / 21,868.52-30,182.68-13,695.92

Finding the Fourth Proportional to 21,868.52, 30,182.68 and 13,695.92

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Solution

The fourth proportional to 21,868.52, 30,182.68 and 13,695.92 is: 18,902.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,868.52 : 30,182.68 = 13,695.92 : x
  2. Step 2: Convert to fraction form
    21,868.52/30,182.68 = 13,695.92/x
  3. Step 3: Cross multiply
    21,868.52x = 30,182.68 × 13,695.92
  4. Step 4: Simplify right side
    21,868.52x = 413,379,453.99
  5. Step 5: Solve for x
    x = 413,379,453.99/21,868.52
  6. Step 6: Final answer
    x = 18,902.94

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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.