Home / 11,181.62-15,430.30-6,401.40

Finding the Fourth Proportional to 11,181.62, 15,430.30 and 6,401.40

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Solution

The fourth proportional to 11,181.62, 15,430.30 and 6,401.40 is: 8,833.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,181.62 : 15,430.30 = 6,401.40 : x
  2. Step 2: Convert to fraction form
    11,181.62/15,430.30 = 6,401.40/x
  3. Step 3: Cross multiply
    11,181.62x = 15,430.30 × 6,401.40
  4. Step 4: Simplify right side
    11,181.62x = 98,775,522.42
  5. Step 5: Solve for x
    x = 98,775,522.42/11,181.62
  6. Step 6: Final answer
    x = 8,833.74

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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.