Home / 13,780.24-20,650.03-8,152.09

Finding the Fourth Proportional to 13,780.24, 20,650.03 and 8,152.09

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Solution

The fourth proportional to 13,780.24, 20,650.03 and 8,152.09 is: 12,216.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,780.24 : 20,650.03 = 8,152.09 : x
  2. Step 2: Convert to fraction form
    13,780.24/20,650.03 = 8,152.09/x
  3. Step 3: Cross multiply
    13,780.24x = 20,650.03 × 8,152.09
  4. Step 4: Simplify right side
    13,780.24x = 168,340,903.06
  5. Step 5: Solve for x
    x = 168,340,903.06/13,780.24
  6. Step 6: Final answer
    x = 12,216.11

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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.