Home / 20,191.39-27,864.08-11,239.67

Finding the Fourth Proportional to 20,191.39, 27,864.08 and 11,239.67

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Solution

The fourth proportional to 20,191.39, 27,864.08 and 11,239.67 is: 15,510.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,191.39 : 27,864.08 = 11,239.67 : x
  2. Step 2: Convert to fraction form
    20,191.39/27,864.08 = 11,239.67/x
  3. Step 3: Cross multiply
    20,191.39x = 27,864.08 × 11,239.67
  4. Step 4: Simplify right side
    20,191.39x = 313,183,119.66
  5. Step 5: Solve for x
    x = 313,183,119.66/20,191.39
  6. Step 6: Final answer
    x = 15,510.73

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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.