Home / 15,869.57-21,906.99-11,108.22

Finding the Fourth Proportional to 15,869.57, 21,906.99 and 11,108.22

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Solution

The fourth proportional to 15,869.57, 21,906.99 and 11,108.22 is: 15,334.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,869.57 : 21,906.99 = 11,108.22 : x
  2. Step 2: Convert to fraction form
    15,869.57/21,906.99 = 11,108.22/x
  3. Step 3: Cross multiply
    15,869.57x = 21,906.99 × 11,108.22
  4. Step 4: Simplify right side
    15,869.57x = 243,347,582.31
  5. Step 5: Solve for x
    x = 243,347,582.31/15,869.57
  6. Step 6: Final answer
    x = 15,334.23

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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.