Home / 21,110.57-29,132.58-11,679.14

Finding the Fourth Proportional to 21,110.57, 29,132.58 and 11,679.14

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Solution

The fourth proportional to 21,110.57, 29,132.58 and 11,679.14 is: 16,117.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,110.57 : 29,132.58 = 11,679.14 : x
  2. Step 2: Convert to fraction form
    21,110.57/29,132.58 = 11,679.14/x
  3. Step 3: Cross multiply
    21,110.57x = 29,132.58 × 11,679.14
  4. Step 4: Simplify right side
    21,110.57x = 340,243,480.38
  5. Step 5: Solve for x
    x = 340,243,480.38/21,110.57
  6. Step 6: Final answer
    x = 16,117.21

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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.