Home / 20,167.66-27,828.74-11,213.38

Finding the Fourth Proportional to 20,167.66, 27,828.74 and 11,213.38

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Solution

The fourth proportional to 20,167.66, 27,828.74 and 11,213.38 is: 15,473.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,167.66 : 27,828.74 = 11,213.38 : x
  2. Step 2: Convert to fraction form
    20,167.66/27,828.74 = 11,213.38/x
  3. Step 3: Cross multiply
    20,167.66x = 27,828.74 × 11,213.38
  4. Step 4: Simplify right side
    20,167.66x = 312,054,041.33
  5. Step 5: Solve for x
    x = 312,054,041.33/20,167.66
  6. Step 6: Final answer
    x = 15,473.00

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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.