Home / 21,602.18-29,800.82-12,644.13

Finding the Fourth Proportional to 21,602.18, 29,800.82 and 12,644.13

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Solution

The fourth proportional to 21,602.18, 29,800.82 and 12,644.13 is: 17,442.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,602.18 : 29,800.82 = 12,644.13 : x
  2. Step 2: Convert to fraction form
    21,602.18/29,800.82 = 12,644.13/x
  3. Step 3: Cross multiply
    21,602.18x = 29,800.82 × 12,644.13
  4. Step 4: Simplify right side
    21,602.18x = 376,805,378.97
  5. Step 5: Solve for x
    x = 376,805,378.97/21,602.18
  6. Step 6: Final answer
    x = 17,442.94

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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.