Home / 13,360.10-20,037.42-8,439.36

Finding the Fourth Proportional to 13,360.10, 20,037.42 and 8,439.36

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Solution

The fourth proportional to 13,360.10, 20,037.42 and 8,439.36 is: 12,657.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,360.10 : 20,037.42 = 8,439.36 : x
  2. Step 2: Convert to fraction form
    13,360.10/20,037.42 = 8,439.36/x
  3. Step 3: Cross multiply
    13,360.10x = 20,037.42 × 8,439.36
  4. Step 4: Simplify right side
    13,360.10x = 169,103,000.85
  5. Step 5: Solve for x
    x = 169,103,000.85/13,360.10
  6. Step 6: Final answer
    x = 12,657.32

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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.