Home / 13,612.12-20,399.16-7,358.68

Finding the Fourth Proportional to 13,612.12, 20,399.16 and 7,358.68

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Solution

The fourth proportional to 13,612.12, 20,399.16 and 7,358.68 is: 11,027.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.12 : 20,399.16 = 7,358.68 : x
  2. Step 2: Convert to fraction form
    13,612.12/20,399.16 = 7,358.68/x
  3. Step 3: Cross multiply
    13,612.12x = 20,399.16 × 7,358.68
  4. Step 4: Simplify right side
    13,612.12x = 150,110,890.71
  5. Step 5: Solve for x
    x = 150,110,890.71/13,612.12
  6. Step 6: Final answer
    x = 11,027.74

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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.