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Finding the Fourth Proportional to 21,702.26, 29,945.14 and 12,751.22

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Solution

The fourth proportional to 21,702.26, 29,945.14 and 12,751.22 is: 17,594.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,702.26 : 29,945.14 = 12,751.22 : x
  2. Step 2: Convert to fraction form
    21,702.26/29,945.14 = 12,751.22/x
  3. Step 3: Cross multiply
    21,702.26x = 29,945.14 × 12,751.22
  4. Step 4: Simplify right side
    21,702.26x = 381,836,886.47
  5. Step 5: Solve for x
    x = 381,836,886.47/21,702.26
  6. Step 6: Final answer
    x = 17,594.34

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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.