Home / 20,210.30-27,889.28-11,257.71

Finding the Fourth Proportional to 20,210.30, 27,889.28 and 11,257.71

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Solution

The fourth proportional to 20,210.30, 27,889.28 and 11,257.71 is: 15,535.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.30 : 27,889.28 = 11,257.71 : x
  2. Step 2: Convert to fraction form
    20,210.30/27,889.28 = 11,257.71/x
  3. Step 3: Cross multiply
    20,210.30x = 27,889.28 × 11,257.71
  4. Step 4: Simplify right side
    20,210.30x = 313,969,370.06
  5. Step 5: Solve for x
    x = 313,969,370.06/20,210.30
  6. Step 6: Final answer
    x = 15,535.12

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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.