Home / 11,329.61-15,636.86-8,472.67

Finding the Fourth Proportional to 11,329.61, 15,636.86 and 8,472.67

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Solution

The fourth proportional to 11,329.61, 15,636.86 and 8,472.67 is: 11,693.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,329.61 : 15,636.86 = 8,472.67 : x
  2. Step 2: Convert to fraction form
    11,329.61/15,636.86 = 8,472.67/x
  3. Step 3: Cross multiply
    11,329.61x = 15,636.86 × 8,472.67
  4. Step 4: Simplify right side
    11,329.61x = 132,485,954.62
  5. Step 5: Solve for x
    x = 132,485,954.62/11,329.61
  6. Step 6: Final answer
    x = 11,693.78

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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.