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Finding the Fourth Proportional to 11,486.35, 15,849.93 and 6,451.12

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Solution

The fourth proportional to 11,486.35, 15,849.93 and 6,451.12 is: 8,901.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,486.35 : 15,849.93 = 6,451.12 : x
  2. Step 2: Convert to fraction form
    11,486.35/15,849.93 = 6,451.12/x
  3. Step 3: Cross multiply
    11,486.35x = 15,849.93 × 6,451.12
  4. Step 4: Simplify right side
    11,486.35x = 102,249,800.42
  5. Step 5: Solve for x
    x = 102,249,800.42/11,486.35
  6. Step 6: Final answer
    x = 8,901.85

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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.