Home / 21,990.27-33,029.70-13,122.93

Finding the Fourth Proportional to 21,990.27, 33,029.70 and 13,122.93

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Solution

The fourth proportional to 21,990.27, 33,029.70 and 13,122.93 is: 19,710.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,990.27 : 33,029.70 = 13,122.93 : x
  2. Step 2: Convert to fraction form
    21,990.27/33,029.70 = 13,122.93/x
  3. Step 3: Cross multiply
    21,990.27x = 33,029.70 × 13,122.93
  4. Step 4: Simplify right side
    21,990.27x = 433,446,441.02
  5. Step 5: Solve for x
    x = 433,446,441.02/21,990.27
  6. Step 6: Final answer
    x = 19,710.83

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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.