Home / 19,429.20-29,095.20-12,819.60

Finding the Fourth Proportional to 19,429.20, 29,095.20 and 12,819.60

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Solution

The fourth proportional to 19,429.20, 29,095.20 and 12,819.60 is: 19,197.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,429.20 : 29,095.20 = 12,819.60 : x
  2. Step 2: Convert to fraction form
    19,429.20/29,095.20 = 12,819.60/x
  3. Step 3: Cross multiply
    19,429.20x = 29,095.20 × 12,819.60
  4. Step 4: Simplify right side
    19,429.20x = 372,988,825.92
  5. Step 5: Solve for x
    x = 372,988,825.92/19,429.20
  6. Step 6: Final answer
    x = 19,197.33

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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.