Home / 21,022.76-31,539.90-11,028.18

Finding the Fourth Proportional to 21,022.76, 31,539.90 and 11,028.18

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Solution

The fourth proportional to 21,022.76, 31,539.90 and 11,028.18 is: 16,545.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,022.76 : 31,539.90 = 11,028.18 : x
  2. Step 2: Convert to fraction form
    21,022.76/31,539.90 = 11,028.18/x
  3. Step 3: Cross multiply
    21,022.76x = 31,539.90 × 11,028.18
  4. Step 4: Simplify right side
    21,022.76x = 347,827,694.38
  5. Step 5: Solve for x
    x = 347,827,694.38/21,022.76
  6. Step 6: Final answer
    x = 16,545.29

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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.