Home / 21,869.52-30,205.12-15,927.76

Finding the Fourth Proportional to 21,869.52, 30,205.12 and 15,927.76

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Solution

The fourth proportional to 21,869.52, 30,205.12 and 15,927.76 is: 21,998.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,869.52 : 30,205.12 = 15,927.76 : x
  2. Step 2: Convert to fraction form
    21,869.52/30,205.12 = 15,927.76/x
  3. Step 3: Cross multiply
    21,869.52x = 30,205.12 × 15,927.76
  4. Step 4: Simplify right side
    21,869.52x = 481,099,902.13
  5. Step 5: Solve for x
    x = 481,099,902.13/21,869.52
  6. Step 6: Final answer
    x = 21,998.65

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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.