Home / 21,689.33-29,936.27-14,122.49

Finding the Fourth Proportional to 21,689.33, 29,936.27 and 14,122.49

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Solution

The fourth proportional to 21,689.33, 29,936.27 and 14,122.49 is: 19,492.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,689.33 : 29,936.27 = 14,122.49 : x
  2. Step 2: Convert to fraction form
    21,689.33/29,936.27 = 14,122.49/x
  3. Step 3: Cross multiply
    21,689.33x = 29,936.27 × 14,122.49
  4. Step 4: Simplify right side
    21,689.33x = 422,774,559.34
  5. Step 5: Solve for x
    x = 422,774,559.34/21,689.33
  6. Step 6: Final answer
    x = 19,492.29

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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.