Home / 11,719.69-16,156.35-8,356.67

Finding the Fourth Proportional to 11,719.69, 16,156.35 and 8,356.67

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Solution

The fourth proportional to 11,719.69, 16,156.35 and 8,356.67 is: 11,520.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,719.69 : 16,156.35 = 8,356.67 : x
  2. Step 2: Convert to fraction form
    11,719.69/16,156.35 = 8,356.67/x
  3. Step 3: Cross multiply
    11,719.69x = 16,156.35 × 8,356.67
  4. Step 4: Simplify right side
    11,719.69x = 135,013,285.35
  5. Step 5: Solve for x
    x = 135,013,285.35/11,719.69
  6. Step 6: Final answer
    x = 11,520.21

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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.