Home / 21,258.86-31,867.61-10,162.67

Finding the Fourth Proportional to 21,258.86, 31,867.61 and 10,162.67

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Solution

The fourth proportional to 21,258.86, 31,867.61 and 10,162.67 is: 15,234.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,258.86 : 31,867.61 = 10,162.67 : x
  2. Step 2: Convert to fraction form
    21,258.86/31,867.61 = 10,162.67/x
  3. Step 3: Cross multiply
    21,258.86x = 31,867.61 × 10,162.67
  4. Step 4: Simplify right side
    21,258.86x = 323,859,793.97
  5. Step 5: Solve for x
    x = 323,859,793.97/21,258.86
  6. Step 6: Final answer
    x = 15,234.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.