Home / 15,015.73-20,721.12-8,300.92

Finding the Fourth Proportional to 15,015.73, 20,721.12 and 8,300.92

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Solution

The fourth proportional to 15,015.73, 20,721.12 and 8,300.92 is: 11,454.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,015.73 : 20,721.12 = 8,300.92 : x
  2. Step 2: Convert to fraction form
    15,015.73/20,721.12 = 8,300.92/x
  3. Step 3: Cross multiply
    15,015.73x = 20,721.12 × 8,300.92
  4. Step 4: Simplify right side
    15,015.73x = 172,004,359.43
  5. Step 5: Solve for x
    x = 172,004,359.43/15,015.73
  6. Step 6: Final answer
    x = 11,454.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.