Home / 20,210.46-27,889.74-11,257.68

Finding the Fourth Proportional to 20,210.46, 27,889.74 and 11,257.68

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Solution

The fourth proportional to 20,210.46, 27,889.74 and 11,257.68 is: 15,535.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.46 : 27,889.74 = 11,257.68 : x
  2. Step 2: Convert to fraction form
    20,210.46/27,889.74 = 11,257.68/x
  3. Step 3: Cross multiply
    20,210.46x = 27,889.74 × 11,257.68
  4. Step 4: Simplify right side
    20,210.46x = 313,973,768.20
  5. Step 5: Solve for x
    x = 313,973,768.20/20,210.46
  6. Step 6: Final answer
    x = 15,535.21

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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.