Home / 20,117.04-27,760.80-11,164.32

Finding the Fourth Proportional to 20,117.04, 27,760.80 and 11,164.32

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Solution

The fourth proportional to 20,117.04, 27,760.80 and 11,164.32 is: 15,406.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,117.04 : 27,760.80 = 11,164.32 : x
  2. Step 2: Convert to fraction form
    20,117.04/27,760.80 = 11,164.32/x
  3. Step 3: Cross multiply
    20,117.04x = 27,760.80 × 11,164.32
  4. Step 4: Simplify right side
    20,117.04x = 309,930,454.66
  5. Step 5: Solve for x
    x = 309,930,454.66/20,117.04
  6. Step 6: Final answer
    x = 15,406.36

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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.