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Finding the Fourth Proportional to 11,898.35, 16,425.04 and 7,867.65

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Solution

The fourth proportional to 11,898.35, 16,425.04 and 7,867.65 is: 10,860.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,898.35 : 16,425.04 = 7,867.65 : x
  2. Step 2: Convert to fraction form
    11,898.35/16,425.04 = 7,867.65/x
  3. Step 3: Cross multiply
    11,898.35x = 16,425.04 × 7,867.65
  4. Step 4: Simplify right side
    11,898.35x = 129,226,465.96
  5. Step 5: Solve for x
    x = 129,226,465.96/11,898.35
  6. Step 6: Final answer
    x = 10,860.87

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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.