Home / 22,252.86-30,720.05-12,819.60

Finding the Fourth Proportional to 22,252.86, 30,720.05 and 12,819.60

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Solution

The fourth proportional to 22,252.86, 30,720.05 and 12,819.60 is: 17,697.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,252.86 : 30,720.05 = 12,819.60 : x
  2. Step 2: Convert to fraction form
    22,252.86/30,720.05 = 12,819.60/x
  3. Step 3: Cross multiply
    22,252.86x = 30,720.05 × 12,819.60
  4. Step 4: Simplify right side
    22,252.86x = 393,818,752.98
  5. Step 5: Solve for x
    x = 393,818,752.98/22,252.86
  6. Step 6: Final answer
    x = 17,697.44

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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.