Home / 20,263.97-30,357.99-11,919.05

Finding the Fourth Proportional to 20,263.97, 30,357.99 and 11,919.05

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Solution

The fourth proportional to 20,263.97, 30,357.99 and 11,919.05 is: 17,856.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,263.97 : 30,357.99 = 11,919.05 : x
  2. Step 2: Convert to fraction form
    20,263.97/30,357.99 = 11,919.05/x
  3. Step 3: Cross multiply
    20,263.97x = 30,357.99 × 11,919.05
  4. Step 4: Simplify right side
    20,263.97x = 361,838,362.76
  5. Step 5: Solve for x
    x = 361,838,362.76/20,263.97
  6. Step 6: Final answer
    x = 17,856.24

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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.