Home / 19,138.35-28,710.61-6,661.92

Finding the Fourth Proportional to 19,138.35, 28,710.61 and 6,661.92

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Solution

The fourth proportional to 19,138.35, 28,710.61 and 6,661.92 is: 9,993.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,138.35 : 28,710.61 = 6,661.92 : x
  2. Step 2: Convert to fraction form
    19,138.35/28,710.61 = 6,661.92/x
  3. Step 3: Cross multiply
    19,138.35x = 28,710.61 × 6,661.92
  4. Step 4: Simplify right side
    19,138.35x = 191,267,753.66
  5. Step 5: Solve for x
    x = 191,267,753.66/19,138.35
  6. Step 6: Final answer
    x = 9,993.95

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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.