Home / 10,883.20-15,018.78-6,168.40

Finding the Fourth Proportional to 10,883.20, 15,018.78 and 6,168.40

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Solution

The fourth proportional to 10,883.20, 15,018.78 and 6,168.40 is: 8,512.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,883.20 : 15,018.78 = 6,168.40 : x
  2. Step 2: Convert to fraction form
    10,883.20/15,018.78 = 6,168.40/x
  3. Step 3: Cross multiply
    10,883.20x = 15,018.78 × 6,168.40
  4. Step 4: Simplify right side
    10,883.20x = 92,641,842.55
  5. Step 5: Solve for x
    x = 92,641,842.55/10,883.20
  6. Step 6: Final answer
    x = 8,512.37

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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.