Home / 19,319.11-28,982.81-5,991.81

Finding the Fourth Proportional to 19,319.11, 28,982.81 and 5,991.81

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Solution

The fourth proportional to 19,319.11, 28,982.81 and 5,991.81 is: 8,989.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,319.11 : 28,982.81 = 5,991.81 : x
  2. Step 2: Convert to fraction form
    19,319.11/28,982.81 = 5,991.81/x
  3. Step 3: Cross multiply
    19,319.11x = 28,982.81 × 5,991.81
  4. Step 4: Simplify right side
    19,319.11x = 173,659,490.79
  5. Step 5: Solve for x
    x = 173,659,490.79/19,319.11
  6. Step 6: Final answer
    x = 8,989.00

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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.