Home / 11,913.20-16,432.77-7,669.79

Finding the Fourth Proportional to 11,913.20, 16,432.77 and 7,669.79

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Solution

The fourth proportional to 11,913.20, 16,432.77 and 7,669.79 is: 10,579.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,913.20 : 16,432.77 = 7,669.79 : x
  2. Step 2: Convert to fraction form
    11,913.20/16,432.77 = 7,669.79/x
  3. Step 3: Cross multiply
    11,913.20x = 16,432.77 × 7,669.79
  4. Step 4: Simplify right side
    11,913.20x = 126,035,895.02
  5. Step 5: Solve for x
    x = 126,035,895.02/11,913.20
  6. Step 6: Final answer
    x = 10,579.52

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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.