Home / 21,849.76-30,156.54-12,896.68

Finding the Fourth Proportional to 21,849.76, 30,156.54 and 12,896.68

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Solution

The fourth proportional to 21,849.76, 30,156.54 and 12,896.68 is: 17,799.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,849.76 : 30,156.54 = 12,896.68 : x
  2. Step 2: Convert to fraction form
    21,849.76/30,156.54 = 12,896.68/x
  3. Step 3: Cross multiply
    21,849.76x = 30,156.54 × 12,896.68
  4. Step 4: Simplify right side
    21,849.76x = 388,919,246.29
  5. Step 5: Solve for x
    x = 388,919,246.29/21,849.76
  6. Step 6: Final answer
    x = 17,799.70

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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.