Home / 20,923.77-28,874.83-11,363.66

Finding the Fourth Proportional to 20,923.77, 28,874.83 and 11,363.66

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Solution

The fourth proportional to 20,923.77, 28,874.83 and 11,363.66 is: 15,681.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923.77 : 28,874.83 = 11,363.66 : x
  2. Step 2: Convert to fraction form
    20,923.77/28,874.83 = 11,363.66/x
  3. Step 3: Cross multiply
    20,923.77x = 28,874.83 × 11,363.66
  4. Step 4: Simplify right side
    20,923.77x = 328,123,750.68
  5. Step 5: Solve for x
    x = 328,123,750.68/20,923.77
  6. Step 6: Final answer
    x = 15,681.87

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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.