Home / 19,815.18-29,724.61-7,168.11

Finding the Fourth Proportional to 19,815.18, 29,724.61 and 7,168.11

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Solution

The fourth proportional to 19,815.18, 29,724.61 and 7,168.11 is: 10,752.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,815.18 : 29,724.61 = 7,168.11 : x
  2. Step 2: Convert to fraction form
    19,815.18/29,724.61 = 7,168.11/x
  3. Step 3: Cross multiply
    19,815.18x = 29,724.61 × 7,168.11
  4. Step 4: Simplify right side
    19,815.18x = 213,069,274.19
  5. Step 5: Solve for x
    x = 213,069,274.19/19,815.18
  6. Step 6: Final answer
    x = 10,752.83

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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.