Home / 13,449.57-20,153.26-8,508.77

Finding the Fourth Proportional to 13,449.57, 20,153.26 and 8,508.77

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Solution

The fourth proportional to 13,449.57, 20,153.26 and 8,508.77 is: 12,749.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,449.57 : 20,153.26 = 8,508.77 : x
  2. Step 2: Convert to fraction form
    13,449.57/20,153.26 = 8,508.77/x
  3. Step 3: Cross multiply
    13,449.57x = 20,153.26 × 8,508.77
  4. Step 4: Simplify right side
    13,449.57x = 171,479,403.71
  5. Step 5: Solve for x
    x = 171,479,403.71/13,449.57
  6. Step 6: Final answer
    x = 12,749.81

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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.