Home / 20,029.61-27,611.39-15,767.01

Finding the Fourth Proportional to 20,029.61, 27,611.39 and 15,767.01

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Solution

The fourth proportional to 20,029.61, 27,611.39 and 15,767.01 is: 21,735.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,029.61 : 27,611.39 = 15,767.01 : x
  2. Step 2: Convert to fraction form
    20,029.61/27,611.39 = 15,767.01/x
  3. Step 3: Cross multiply
    20,029.61x = 27,611.39 × 15,767.01
  4. Step 4: Simplify right side
    20,029.61x = 435,348,983.41
  5. Step 5: Solve for x
    x = 435,348,983.41/20,029.61
  6. Step 6: Final answer
    x = 21,735.28

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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.