Home / 11,181.58-15,431.01-6,402.28

Finding the Fourth Proportional to 11,181.58, 15,431.01 and 6,402.28

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Solution

The fourth proportional to 11,181.58, 15,431.01 and 6,402.28 is: 8,835.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,181.58 : 15,431.01 = 6,402.28 : x
  2. Step 2: Convert to fraction form
    11,181.58/15,431.01 = 6,402.28/x
  3. Step 3: Cross multiply
    11,181.58x = 15,431.01 × 6,402.28
  4. Step 4: Simplify right side
    11,181.58x = 98,793,646.70
  5. Step 5: Solve for x
    x = 98,793,646.70/11,181.58
  6. Step 6: Final answer
    x = 8,835.39

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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.