Home / 21,702.17-29,948.49-12,142.19

Finding the Fourth Proportional to 21,702.17, 29,948.49 and 12,142.19

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Solution

The fourth proportional to 21,702.17, 29,948.49 and 12,142.19 is: 16,755.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,702.17 : 29,948.49 = 12,142.19 : x
  2. Step 2: Convert to fraction form
    21,702.17/29,948.49 = 12,142.19/x
  3. Step 3: Cross multiply
    21,702.17x = 29,948.49 × 12,142.19
  4. Step 4: Simplify right side
    21,702.17x = 363,640,106.05
  5. Step 5: Solve for x
    x = 363,640,106.05/21,702.17
  6. Step 6: Final answer
    x = 16,755.94

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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.