Home / 21,637.72-29,839.35-13,141.23

Finding the Fourth Proportional to 21,637.72, 29,839.35 and 13,141.23

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Solution

The fourth proportional to 21,637.72, 29,839.35 and 13,141.23 is: 18,122.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,637.72 : 29,839.35 = 13,141.23 : x
  2. Step 2: Convert to fraction form
    21,637.72/29,839.35 = 13,141.23/x
  3. Step 3: Cross multiply
    21,637.72x = 29,839.35 × 13,141.23
  4. Step 4: Simplify right side
    21,637.72x = 392,125,761.40
  5. Step 5: Solve for x
    x = 392,125,761.40/21,637.72
  6. Step 6: Final answer
    x = 18,122.32

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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.