Home / 20,140.49-27,792.64-11,187.43

Finding the Fourth Proportional to 20,140.49, 27,792.64 and 11,187.43

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Solution

The fourth proportional to 20,140.49, 27,792.64 and 11,187.43 is: 15,437.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,140.49 : 27,792.64 = 11,187.43 : x
  2. Step 2: Convert to fraction form
    20,140.49/27,792.64 = 11,187.43/x
  3. Step 3: Cross multiply
    20,140.49x = 27,792.64 × 11,187.43
  4. Step 4: Simplify right side
    20,140.49x = 310,928,214.52
  5. Step 5: Solve for x
    x = 310,928,214.52/20,140.49
  6. Step 6: Final answer
    x = 15,437.97

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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.