Home / 11,705.28-16,153.60-6,400.32

Finding the Fourth Proportional to 11,705.28, 16,153.60 and 6,400.32

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Solution

The fourth proportional to 11,705.28, 16,153.60 and 6,400.32 is: 8,832.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,705.28 : 16,153.60 = 6,400.32 : x
  2. Step 2: Convert to fraction form
    11,705.28/16,153.60 = 6,400.32/x
  3. Step 3: Cross multiply
    11,705.28x = 16,153.60 × 6,400.32
  4. Step 4: Simplify right side
    11,705.28x = 103,388,209.15
  5. Step 5: Solve for x
    x = 103,388,209.15/11,705.28
  6. Step 6: Final answer
    x = 8,832.61

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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.