Home / 13,299.10-18,352.20-8,512.30

Finding the Fourth Proportional to 13,299.10, 18,352.20 and 8,512.30

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Solution

The fourth proportional to 13,299.10, 18,352.20 and 8,512.30 is: 11,746.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,299.10 : 18,352.20 = 8,512.30 : x
  2. Step 2: Convert to fraction form
    13,299.10/18,352.20 = 8,512.30/x
  3. Step 3: Cross multiply
    13,299.10x = 18,352.20 × 8,512.30
  4. Step 4: Simplify right side
    13,299.10x = 156,219,432.06
  5. Step 5: Solve for x
    x = 156,219,432.06/13,299.10
  6. Step 6: Final answer
    x = 11,746.62

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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.