Home / 19,992.57-30,007.21-10,138.92

Finding the Fourth Proportional to 19,992.57, 30,007.21 and 10,138.92

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Solution

The fourth proportional to 19,992.57, 30,007.21 and 10,138.92 is: 15,217.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,992.57 : 30,007.21 = 10,138.92 : x
  2. Step 2: Convert to fraction form
    19,992.57/30,007.21 = 10,138.92/x
  3. Step 3: Cross multiply
    19,992.57x = 30,007.21 × 10,138.92
  4. Step 4: Simplify right side
    19,992.57x = 304,240,701.61
  5. Step 5: Solve for x
    x = 304,240,701.61/19,992.57
  6. Step 6: Final answer
    x = 15,217.69

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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.