Home / 21,308.53-29,406.77-11,877.16

Finding the Fourth Proportional to 21,308.53, 29,406.77 and 11,877.16

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Solution

The fourth proportional to 21,308.53, 29,406.77 and 11,877.16 is: 16,391.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308.53 : 29,406.77 = 11,877.16 : x
  2. Step 2: Convert to fraction form
    21,308.53/29,406.77 = 11,877.16/x
  3. Step 3: Cross multiply
    21,308.53x = 29,406.77 × 11,877.16
  4. Step 4: Simplify right side
    21,308.53x = 349,268,912.37
  5. Step 5: Solve for x
    x = 349,268,912.37/21,308.53
  6. Step 6: Final answer
    x = 16,391.04

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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.