Home / 20,992.14-31,497.30-10,472.67

Finding the Fourth Proportional to 20,992.14, 31,497.30 and 10,472.67

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Solution

The fourth proportional to 20,992.14, 31,497.30 and 10,472.67 is: 15,713.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,992.14 : 31,497.30 = 10,472.67 : x
  2. Step 2: Convert to fraction form
    20,992.14/31,497.30 = 10,472.67/x
  3. Step 3: Cross multiply
    20,992.14x = 31,497.30 × 10,472.67
  4. Step 4: Simplify right side
    20,992.14x = 329,860,828.79
  5. Step 5: Solve for x
    x = 329,860,828.79/20,992.14
  6. Step 6: Final answer
    x = 15,713.54

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1.5x scale

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.