Home / 11,181.31-15,430.58-6,145.71

Finding the Fourth Proportional to 11,181.31, 15,430.58 and 6,145.71

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Solution

The fourth proportional to 11,181.31, 15,430.58 and 6,145.71 is: 8,481.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,181.31 : 15,430.58 = 6,145.71 : x
  2. Step 2: Convert to fraction form
    11,181.31/15,430.58 = 6,145.71/x
  3. Step 3: Cross multiply
    11,181.31x = 15,430.58 × 6,145.71
  4. Step 4: Simplify right side
    11,181.31x = 94,831,891.06
  5. Step 5: Solve for x
    x = 94,831,891.06/11,181.31
  6. Step 6: Final answer
    x = 8,481.28

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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.