Home / 20,175.12-27,838.08-11,222.28

Finding the Fourth Proportional to 20,175.12, 27,838.08 and 11,222.28

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Solution

The fourth proportional to 20,175.12, 27,838.08 and 11,222.28 is: 15,484.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,175.12 : 27,838.08 = 11,222.28 : x
  2. Step 2: Convert to fraction form
    20,175.12/27,838.08 = 11,222.28/x
  3. Step 3: Cross multiply
    20,175.12x = 27,838.08 × 11,222.28
  4. Step 4: Simplify right side
    20,175.12x = 312,406,728.42
  5. Step 5: Solve for x
    x = 312,406,728.42/20,175.12
  6. Step 6: Final answer
    x = 15,484.75

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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.