Home / 19,788.32-29,694.64-8,101.60

Finding the Fourth Proportional to 19,788.32, 29,694.64 and 8,101.60

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Solution

The fourth proportional to 19,788.32, 29,694.64 and 8,101.60 is: 12,157.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,788.32 : 29,694.64 = 8,101.60 : x
  2. Step 2: Convert to fraction form
    19,788.32/29,694.64 = 8,101.60/x
  3. Step 3: Cross multiply
    19,788.32x = 29,694.64 × 8,101.60
  4. Step 4: Simplify right side
    19,788.32x = 240,574,095.42
  5. Step 5: Solve for x
    x = 240,574,095.42/19,788.32
  6. Step 6: Final answer
    x = 12,157.38

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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.