Home / 21,133.78-29,164.26-11,702.14

Finding the Fourth Proportional to 21,133.78, 29,164.26 and 11,702.14

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Solution

The fourth proportional to 21,133.78, 29,164.26 and 11,702.14 is: 16,148.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,133.78 : 29,164.26 = 11,702.14 : x
  2. Step 2: Convert to fraction form
    21,133.78/29,164.26 = 11,702.14/x
  3. Step 3: Cross multiply
    21,133.78x = 29,164.26 × 11,702.14
  4. Step 4: Simplify right side
    21,133.78x = 341,284,253.52
  5. Step 5: Solve for x
    x = 341,284,253.52/21,133.78
  6. Step 6: Final answer
    x = 16,148.76

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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.