Home / 19,815.80-29,721.84-6,668.32

Finding the Fourth Proportional to 19,815.80, 29,721.84 and 6,668.32

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Solution

The fourth proportional to 19,815.80, 29,721.84 and 6,668.32 is: 10,001.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,815.80 : 29,721.84 = 6,668.32 : x
  2. Step 2: Convert to fraction form
    19,815.80/29,721.84 = 6,668.32/x
  3. Step 3: Cross multiply
    19,815.80x = 29,721.84 × 6,668.32
  4. Step 4: Simplify right side
    19,815.80x = 198,194,740.11
  5. Step 5: Solve for x
    x = 198,194,740.11/19,815.80
  6. Step 6: Final answer
    x = 10,001.85

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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.