Home / 20,127.93-27,776.61-11,175.45

Finding the Fourth Proportional to 20,127.93, 27,776.61 and 11,175.45

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Solution

The fourth proportional to 20,127.93, 27,776.61 and 11,175.45 is: 15,422.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.93 : 27,776.61 = 11,175.45 : x
  2. Step 2: Convert to fraction form
    20,127.93/27,776.61 = 11,175.45/x
  3. Step 3: Cross multiply
    20,127.93x = 27,776.61 × 11,175.45
  4. Step 4: Simplify right side
    20,127.93x = 310,416,116.22
  5. Step 5: Solve for x
    x = 310,416,116.22/20,127.93
  6. Step 6: Final answer
    x = 15,422.16

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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.