Home / 19,147.20-28,719.84-6,663.36

Finding the Fourth Proportional to 19,147.20, 28,719.84 and 6,663.36

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Solution

The fourth proportional to 19,147.20, 28,719.84 and 6,663.36 is: 9,994.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,147.20 : 28,719.84 = 6,663.36 : x
  2. Step 2: Convert to fraction form
    19,147.20/28,719.84 = 6,663.36/x
  3. Step 3: Cross multiply
    19,147.20x = 28,719.84 × 6,663.36
  4. Step 4: Simplify right side
    19,147.20x = 191,370,633.06
  5. Step 5: Solve for x
    x = 191,370,633.06/19,147.20
  6. Step 6: Final answer
    x = 9,994.71

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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.