Home / 12,520.24-17,289.63-8,051.75

Finding the Fourth Proportional to 12,520.24, 17,289.63 and 8,051.75

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Solution

The fourth proportional to 12,520.24, 17,289.63 and 8,051.75 is: 11,118.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520.24 : 17,289.63 = 8,051.75 : x
  2. Step 2: Convert to fraction form
    12,520.24/17,289.63 = 8,051.75/x
  3. Step 3: Cross multiply
    12,520.24x = 17,289.63 × 8,051.75
  4. Step 4: Simplify right side
    12,520.24x = 139,211,691.90
  5. Step 5: Solve for x
    x = 139,211,691.90/12,520.24
  6. Step 6: Final answer
    x = 11,118.94

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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.