Home / 21,174.96-28,998.99-20,898.17

Finding the Fourth Proportional to 21,174.96, 28,998.99 and 20,898.17

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Solution

The fourth proportional to 21,174.96, 28,998.99 and 20,898.17 is: 28,619.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,174.96 : 28,998.99 = 20,898.17 : x
  2. Step 2: Convert to fraction form
    21,174.96/28,998.99 = 20,898.17/x
  3. Step 3: Cross multiply
    21,174.96x = 28,998.99 × 20,898.17
  4. Step 4: Simplify right side
    21,174.96x = 606,025,949.72
  5. Step 5: Solve for x
    x = 606,025,949.72/21,174.96
  6. Step 6: Final answer
    x = 28,619.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.