Home / 15,158.66-20,917.52-11,181.96

Finding the Fourth Proportional to 15,158.66, 20,917.52 and 11,181.96

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Solution

The fourth proportional to 15,158.66, 20,917.52 and 11,181.96 is: 15,430.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,158.66 : 20,917.52 = 11,181.96 : x
  2. Step 2: Convert to fraction form
    15,158.66/20,917.52 = 11,181.96/x
  3. Step 3: Cross multiply
    15,158.66x = 20,917.52 × 11,181.96
  4. Step 4: Simplify right side
    15,158.66x = 233,898,871.94
  5. Step 5: Solve for x
    x = 233,898,871.94/15,158.66
  6. Step 6: Final answer
    x = 15,430.05

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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.