Home / 11,688.77-16,129.88-6,382.55

Finding the Fourth Proportional to 11,688.77, 16,129.88 and 6,382.55

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Solution

The fourth proportional to 11,688.77, 16,129.88 and 6,382.55 is: 8,807.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,688.77 : 16,129.88 = 6,382.55 : x
  2. Step 2: Convert to fraction form
    11,688.77/16,129.88 = 6,382.55/x
  3. Step 3: Cross multiply
    11,688.77x = 16,129.88 × 6,382.55
  4. Step 4: Simplify right side
    11,688.77x = 102,949,653.03
  5. Step 5: Solve for x
    x = 102,949,653.03/11,688.77
  6. Step 6: Final answer
    x = 8,807.57

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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.