Home / 11,336.16-16,981.20-7,442.40

Finding the Fourth Proportional to 11,336.16, 16,981.20 and 7,442.40

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Solution

The fourth proportional to 11,336.16, 16,981.20 and 7,442.40 is: 11,148.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,336.16 : 16,981.20 = 7,442.40 : x
  2. Step 2: Convert to fraction form
    11,336.16/16,981.20 = 7,442.40/x
  3. Step 3: Cross multiply
    11,336.16x = 16,981.20 × 7,442.40
  4. Step 4: Simplify right side
    11,336.16x = 126,380,882.88
  5. Step 5: Solve for x
    x = 126,380,882.88/11,336.16
  6. Step 6: Final answer
    x = 11,148.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.