Home / 28,649.70-42,974.55-11,131.83

Finding the Fourth Proportional to 28,649.70, 42,974.55 and 11,131.83

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Solution

The fourth proportional to 28,649.70, 42,974.55 and 11,131.83 is: 16,697.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,649.70 : 42,974.55 = 11,131.83 : x
  2. Step 2: Convert to fraction form
    28,649.70/42,974.55 = 11,131.83/x
  3. Step 3: Cross multiply
    28,649.70x = 42,974.55 × 11,131.83
  4. Step 4: Simplify right side
    28,649.70x = 478,385,384.93
  5. Step 5: Solve for x
    x = 478,385,384.93/28,649.70
  6. Step 6: Final answer
    x = 16,697.75

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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.