Home / 20,203.38-27,880.47-11,250.45

Finding the Fourth Proportional to 20,203.38, 27,880.47 and 11,250.45

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Solution

The fourth proportional to 20,203.38, 27,880.47 and 11,250.45 is: 15,525.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,203.38 : 27,880.47 = 11,250.45 : x
  2. Step 2: Convert to fraction form
    20,203.38/27,880.47 = 11,250.45/x
  3. Step 3: Cross multiply
    20,203.38x = 27,880.47 × 11,250.45
  4. Step 4: Simplify right side
    20,203.38x = 313,667,833.71
  5. Step 5: Solve for x
    x = 313,667,833.71/20,203.38
  6. Step 6: Final answer
    x = 15,525.51

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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.