Home / 21,137.74-29,170.74-11,707.18

Finding the Fourth Proportional to 21,137.74, 29,170.74 and 11,707.18

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Solution

The fourth proportional to 21,137.74, 29,170.74 and 11,707.18 is: 16,156.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137.74 : 29,170.74 = 11,707.18 : x
  2. Step 2: Convert to fraction form
    21,137.74/29,170.74 = 11,707.18/x
  3. Step 3: Cross multiply
    21,137.74x = 29,170.74 × 11,707.18
  4. Step 4: Simplify right side
    21,137.74x = 341,507,103.91
  5. Step 5: Solve for x
    x = 341,507,103.91/21,137.74
  6. Step 6: Final answer
    x = 16,156.27

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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.