Home / 11,187.87-15,439.46-6,407.81

Finding the Fourth Proportional to 11,187.87, 15,439.46 and 6,407.81

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Solution

The fourth proportional to 11,187.87, 15,439.46 and 6,407.81 is: 8,842.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,187.87 : 15,439.46 = 6,407.81 : x
  2. Step 2: Convert to fraction form
    11,187.87/15,439.46 = 6,407.81/x
  3. Step 3: Cross multiply
    11,187.87x = 15,439.46 × 6,407.81
  4. Step 4: Simplify right side
    11,187.87x = 98,933,110.89
  5. Step 5: Solve for x
    x = 98,933,110.89/11,187.87
  6. Step 6: Final answer
    x = 8,842.89

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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.