Home / 10,921.86-16,399.53-6,558.66

Finding the Fourth Proportional to 10,921.86, 16,399.53 and 6,558.66

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Solution

The fourth proportional to 10,921.86, 16,399.53 and 6,558.66 is: 9,848.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.86 : 16,399.53 = 6,558.66 : x
  2. Step 2: Convert to fraction form
    10,921.86/16,399.53 = 6,558.66/x
  3. Step 3: Cross multiply
    10,921.86x = 16,399.53 × 6,558.66
  4. Step 4: Simplify right side
    10,921.86x = 107,558,941.43
  5. Step 5: Solve for x
    x = 107,558,941.43/10,921.86
  6. Step 6: Final answer
    x = 9,848.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.