Home / 21,813.27-32,691.99-18,990.51

Finding the Fourth Proportional to 21,813.27, 32,691.99 and 18,990.51

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Solution

The fourth proportional to 21,813.27, 32,691.99 and 18,990.51 is: 28,461.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,813.27 : 32,691.99 = 18,990.51 : x
  2. Step 2: Convert to fraction form
    21,813.27/32,691.99 = 18,990.51/x
  3. Step 3: Cross multiply
    21,813.27x = 32,691.99 × 18,990.51
  4. Step 4: Simplify right side
    21,813.27x = 620,837,563.01
  5. Step 5: Solve for x
    x = 620,837,563.01/21,813.27
  6. Step 6: Final answer
    x = 28,461.46

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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.