Home / 19,142.87-28,712.03-5,103.95

Finding the Fourth Proportional to 19,142.87, 28,712.03 and 5,103.95

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Solution

The fourth proportional to 19,142.87, 28,712.03 and 5,103.95 is: 7,655.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,142.87 : 28,712.03 = 5,103.95 : x
  2. Step 2: Convert to fraction form
    19,142.87/28,712.03 = 5,103.95/x
  3. Step 3: Cross multiply
    19,142.87x = 28,712.03 × 5,103.95
  4. Step 4: Simplify right side
    19,142.87x = 146,544,740.00
  5. Step 5: Solve for x
    x = 146,544,740.00/19,142.87
  6. Step 6: Final answer
    x = 7,655.32

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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.