Home / 19,140.20-28,708.44-5,813.31

Finding the Fourth Proportional to 19,140.20, 28,708.44 and 5,813.31

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Solution

The fourth proportional to 19,140.20, 28,708.44 and 5,813.31 is: 8,719.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,140.20 : 28,708.44 = 5,813.31 : x
  2. Step 2: Convert to fraction form
    19,140.20/28,708.44 = 5,813.31/x
  3. Step 3: Cross multiply
    19,140.20x = 28,708.44 × 5,813.31
  4. Step 4: Simplify right side
    19,140.20x = 166,891,061.34
  5. Step 5: Solve for x
    x = 166,891,061.34/19,140.20
  6. Step 6: Final answer
    x = 8,719.40

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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.