Home / 20,136.15-27,785.85-11,757.51

Finding the Fourth Proportional to 20,136.15, 27,785.85 and 11,757.51

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Solution

The fourth proportional to 20,136.15, 27,785.85 and 11,757.51 is: 16,224.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.15 : 27,785.85 = 11,757.51 : x
  2. Step 2: Convert to fraction form
    20,136.15/27,785.85 = 11,757.51/x
  3. Step 3: Cross multiply
    20,136.15x = 27,785.85 × 11,757.51
  4. Step 4: Simplify right side
    20,136.15x = 326,692,409.23
  5. Step 5: Solve for x
    x = 326,692,409.23/20,136.15
  6. Step 6: Final answer
    x = 16,224.17

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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.