Home / 21,247.09-29,321.13-11,816.26

Finding the Fourth Proportional to 21,247.09, 29,321.13 and 11,816.26

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Solution

The fourth proportional to 21,247.09, 29,321.13 and 11,816.26 is: 16,306.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.09 : 29,321.13 = 11,816.26 : x
  2. Step 2: Convert to fraction form
    21,247.09/29,321.13 = 11,816.26/x
  3. Step 3: Cross multiply
    21,247.09x = 29,321.13 × 11,816.26
  4. Step 4: Simplify right side
    21,247.09x = 346,466,095.57
  5. Step 5: Solve for x
    x = 346,466,095.57/21,247.09
  6. Step 6: Final answer
    x = 16,306.52

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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.