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Finding the Fourth Proportional to 11,700.14, 16,141.06 and 6,981.69

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Solution

The fourth proportional to 11,700.14, 16,141.06 and 6,981.69 is: 9,631.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,700.14 : 16,141.06 = 6,981.69 : x
  2. Step 2: Convert to fraction form
    11,700.14/16,141.06 = 6,981.69/x
  3. Step 3: Cross multiply
    11,700.14x = 16,141.06 × 6,981.69
  4. Step 4: Simplify right side
    11,700.14x = 112,691,842.28
  5. Step 5: Solve for x
    x = 112,691,842.28/11,700.14
  6. Step 6: Final answer
    x = 9,631.67

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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.