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Finding the Fourth Proportional to 10,620.22, 14,642.13 and 6,836.62

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Solution

The fourth proportional to 10,620.22, 14,642.13 and 6,836.62 is: 9,425.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,620.22 : 14,642.13 = 6,836.62 : x
  2. Step 2: Convert to fraction form
    10,620.22/14,642.13 = 6,836.62/x
  3. Step 3: Cross multiply
    10,620.22x = 14,642.13 × 6,836.62
  4. Step 4: Simplify right side
    10,620.22x = 100,102,678.80
  5. Step 5: Solve for x
    x = 100,102,678.80/10,620.22
  6. Step 6: Final answer
    x = 9,425.67

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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.