Home / 20,363.58-28,102.23-11,288.76

Finding the Fourth Proportional to 20,363.58, 28,102.23 and 11,288.76

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Solution

The fourth proportional to 20,363.58, 28,102.23 and 11,288.76 is: 15,578.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,363.58 : 28,102.23 = 11,288.76 : x
  2. Step 2: Convert to fraction form
    20,363.58/28,102.23 = 11,288.76/x
  3. Step 3: Cross multiply
    20,363.58x = 28,102.23 × 11,288.76
  4. Step 4: Simplify right side
    20,363.58x = 317,239,329.93
  5. Step 5: Solve for x
    x = 317,239,329.93/20,363.58
  6. Step 6: Final answer
    x = 15,578.76

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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.