Home / 21,134.19-29,165.24-11,443.75

Finding the Fourth Proportional to 21,134.19, 29,165.24 and 11,443.75

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Solution

The fourth proportional to 21,134.19, 29,165.24 and 11,443.75 is: 15,792.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,134.19 : 29,165.24 = 11,443.75 : x
  2. Step 2: Convert to fraction form
    21,134.19/29,165.24 = 11,443.75/x
  3. Step 3: Cross multiply
    21,134.19x = 29,165.24 × 11,443.75
  4. Step 4: Simplify right side
    21,134.19x = 333,759,585.12
  5. Step 5: Solve for x
    x = 333,759,585.12/21,134.19
  6. Step 6: Final answer
    x = 15,792.40

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Double scale
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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.