Home / 11,639.81-16,081.73-8,118.74

Finding the Fourth Proportional to 11,639.81, 16,081.73 and 8,118.74

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Solution

The fourth proportional to 11,639.81, 16,081.73 and 8,118.74 is: 11,216.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,639.81 : 16,081.73 = 8,118.74 : x
  2. Step 2: Convert to fraction form
    11,639.81/16,081.73 = 8,118.74/x
  3. Step 3: Cross multiply
    11,639.81x = 16,081.73 × 8,118.74
  4. Step 4: Simplify right side
    11,639.81x = 130,563,384.62
  5. Step 5: Solve for x
    x = 130,563,384.62/11,639.81
  6. Step 6: Final answer
    x = 11,216.97

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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.