Home / 21,056.28-29,058.38-12,105.64

Finding the Fourth Proportional to 21,056.28, 29,058.38 and 12,105.64

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Solution

The fourth proportional to 21,056.28, 29,058.38 and 12,105.64 is: 16,706.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,056.28 : 29,058.38 = 12,105.64 : x
  2. Step 2: Convert to fraction form
    21,056.28/29,058.38 = 12,105.64/x
  3. Step 3: Cross multiply
    21,056.28x = 29,058.38 × 12,105.64
  4. Step 4: Simplify right side
    21,056.28x = 351,770,287.26
  5. Step 5: Solve for x
    x = 351,770,287.26/21,056.28
  6. Step 6: Final answer
    x = 16,706.19

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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.