Home / 11,765.96-16,228.83-9,985.31

Finding the Fourth Proportional to 11,765.96, 16,228.83 and 9,985.31

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Solution

The fourth proportional to 11,765.96, 16,228.83 and 9,985.31 is: 13,772.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,765.96 : 16,228.83 = 9,985.31 : x
  2. Step 2: Convert to fraction form
    11,765.96/16,228.83 = 9,985.31/x
  3. Step 3: Cross multiply
    11,765.96x = 16,228.83 × 9,985.31
  4. Step 4: Simplify right side
    11,765.96x = 162,049,854.79
  5. Step 5: Solve for x
    x = 162,049,854.79/11,765.96
  6. Step 6: Final answer
    x = 13,772.77

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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.