Home / 20,210.65-27,889.97-11,257.67

Finding the Fourth Proportional to 20,210.65, 27,889.97 and 11,257.67

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Solution

The fourth proportional to 20,210.65, 27,889.97 and 11,257.67 is: 15,535.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.65 : 27,889.97 = 11,257.67 : x
  2. Step 2: Convert to fraction form
    20,210.65/27,889.97 = 11,257.67/x
  3. Step 3: Cross multiply
    20,210.65x = 27,889.97 × 11,257.67
  4. Step 4: Simplify right side
    20,210.65x = 313,975,998.45
  5. Step 5: Solve for x
    x = 313,975,998.45/20,210.65
  6. Step 6: Final answer
    x = 15,535.18

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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.