Home / 21,143.23-29,111.26-17,949.91

Finding the Fourth Proportional to 21,143.23, 29,111.26 and 17,949.91

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Solution

The fourth proportional to 21,143.23, 29,111.26 and 17,949.91 is: 24,714.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,143.23 : 29,111.26 = 17,949.91 : x
  2. Step 2: Convert to fraction form
    21,143.23/29,111.26 = 17,949.91/x
  3. Step 3: Cross multiply
    21,143.23x = 29,111.26 × 17,949.91
  4. Step 4: Simplify right side
    21,143.23x = 522,544,496.99
  5. Step 5: Solve for x
    x = 522,544,496.99/21,143.23
  6. Step 6: Final answer
    x = 24,714.51

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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.