Home / 20,218.71-27,899.31-11,265.57

Finding the Fourth Proportional to 20,218.71, 27,899.31 and 11,265.57

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Solution

The fourth proportional to 20,218.71, 27,899.31 and 11,265.57 is: 15,545.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218.71 : 27,899.31 = 11,265.57 : x
  2. Step 2: Convert to fraction form
    20,218.71/27,899.31 = 11,265.57/x
  3. Step 3: Cross multiply
    20,218.71x = 27,899.31 × 11,265.57
  4. Step 4: Simplify right side
    20,218.71x = 314,301,629.76
  5. Step 5: Solve for x
    x = 314,301,629.76/20,218.71
  6. Step 6: Final answer
    x = 15,545.09

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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.