Home / 21,171.60-29,217.51-11,612.16

Finding the Fourth Proportional to 21,171.60, 29,217.51 and 11,612.16

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Solution

The fourth proportional to 21,171.60, 29,217.51 and 11,612.16 is: 16,025.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,171.60 : 29,217.51 = 11,612.16 : x
  2. Step 2: Convert to fraction form
    21,171.60/29,217.51 = 11,612.16/x
  3. Step 3: Cross multiply
    21,171.60x = 29,217.51 × 11,612.16
  4. Step 4: Simplify right side
    21,171.60x = 339,278,400.92
  5. Step 5: Solve for x
    x = 339,278,400.92/21,171.60
  6. Step 6: Final answer
    x = 16,025.17

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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.