Home / 11,687.32-16,128.55-6,382.13

Finding the Fourth Proportional to 11,687.32, 16,128.55 and 6,382.13

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Solution

The fourth proportional to 11,687.32, 16,128.55 and 6,382.13 is: 8,807.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,687.32 : 16,128.55 = 6,382.13 : x
  2. Step 2: Convert to fraction form
    11,687.32/16,128.55 = 6,382.13/x
  3. Step 3: Cross multiply
    11,687.32x = 16,128.55 × 6,382.13
  4. Step 4: Simplify right side
    11,687.32x = 102,934,430.15
  5. Step 5: Solve for x
    x = 102,934,430.15/11,687.32
  6. Step 6: Final answer
    x = 8,807.36

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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.