Home / 12,809.12-19,213.20-3,575.52

Finding the Fourth Proportional to 12,809.12, 19,213.20 and 3,575.52

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Solution

The fourth proportional to 12,809.12, 19,213.20 and 3,575.52 is: 5,363.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,809.12 : 19,213.20 = 3,575.52 : x
  2. Step 2: Convert to fraction form
    12,809.12/19,213.20 = 3,575.52/x
  3. Step 3: Cross multiply
    12,809.12x = 19,213.20 × 3,575.52
  4. Step 4: Simplify right side
    12,809.12x = 68,697,180.86
  5. Step 5: Solve for x
    x = 68,697,180.86/12,809.12
  6. Step 6: Final answer
    x = 5,363.15

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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.