Home / 19,138.47-28,712.56-5,990.95

Finding the Fourth Proportional to 19,138.47, 28,712.56 and 5,990.95

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Solution

The fourth proportional to 19,138.47, 28,712.56 and 5,990.95 is: 8,987.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,138.47 : 28,712.56 = 5,990.95 : x
  2. Step 2: Convert to fraction form
    19,138.47/28,712.56 = 5,990.95/x
  3. Step 3: Cross multiply
    19,138.47x = 28,712.56 × 5,990.95
  4. Step 4: Simplify right side
    19,138.47x = 172,015,511.33
  5. Step 5: Solve for x
    x = 172,015,511.33/19,138.47
  6. Step 6: Final answer
    x = 8,987.94

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1.5x scale

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.