Home / 21,133.64-29,164.43-11,702.21

Finding the Fourth Proportional to 21,133.64, 29,164.43 and 11,702.21

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Solution

The fourth proportional to 21,133.64, 29,164.43 and 11,702.21 is: 16,149.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,133.64 : 29,164.43 = 11,702.21 : x
  2. Step 2: Convert to fraction form
    21,133.64/29,164.43 = 11,702.21/x
  3. Step 3: Cross multiply
    21,133.64x = 29,164.43 × 11,702.21
  4. Step 4: Simplify right side
    21,133.64x = 341,288,080.06
  5. Step 5: Solve for x
    x = 341,288,080.06/21,133.64
  6. Step 6: Final answer
    x = 16,149.04

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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.