Home / 11,812.10-16,306.53-8,054.78

Finding the Fourth Proportional to 11,812.10, 16,306.53 and 8,054.78

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Solution

The fourth proportional to 11,812.10, 16,306.53 and 8,054.78 is: 11,119.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,812.10 : 16,306.53 = 8,054.78 : x
  2. Step 2: Convert to fraction form
    11,812.10/16,306.53 = 8,054.78/x
  3. Step 3: Cross multiply
    11,812.10x = 16,306.53 × 8,054.78
  4. Step 4: Simplify right side
    11,812.10x = 131,345,511.71
  5. Step 5: Solve for x
    x = 131,345,511.71/11,812.10
  6. Step 6: Final answer
    x = 11,119.57

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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.