Home / 20,234.46-27,920.70-11,280.67

Finding the Fourth Proportional to 20,234.46, 27,920.70 and 11,280.67

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Solution

The fourth proportional to 20,234.46, 27,920.70 and 11,280.67 is: 15,565.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,234.46 : 27,920.70 = 11,280.67 : x
  2. Step 2: Convert to fraction form
    20,234.46/27,920.70 = 11,280.67/x
  3. Step 3: Cross multiply
    20,234.46x = 27,920.70 × 11,280.67
  4. Step 4: Simplify right side
    20,234.46x = 314,964,133.07
  5. Step 5: Solve for x
    x = 314,964,133.07/20,234.46
  6. Step 6: Final answer
    x = 15,565.73

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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.