Home / 11,749.86-16,215.83-6,445.71

Finding the Fourth Proportional to 11,749.86, 16,215.83 and 6,445.71

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Solution

The fourth proportional to 11,749.86, 16,215.83 and 6,445.71 is: 8,895.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,749.86 : 16,215.83 = 6,445.71 : x
  2. Step 2: Convert to fraction form
    11,749.86/16,215.83 = 6,445.71/x
  3. Step 3: Cross multiply
    11,749.86x = 16,215.83 × 6,445.71
  4. Step 4: Simplify right side
    11,749.86x = 104,522,529.53
  5. Step 5: Solve for x
    x = 104,522,529.53/11,749.86
  6. Step 6: Final answer
    x = 8,895.64

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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.