Home / 20,557.50-28,367.82-11,605.92

Finding the Fourth Proportional to 20,557.50, 28,367.82 and 11,605.92

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Solution

The fourth proportional to 20,557.50, 28,367.82 and 11,605.92 is: 16,015.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,557.50 : 28,367.82 = 11,605.92 : x
  2. Step 2: Convert to fraction form
    20,557.50/28,367.82 = 11,605.92/x
  3. Step 3: Cross multiply
    20,557.50x = 28,367.82 × 11,605.92
  4. Step 4: Simplify right side
    20,557.50x = 329,234,649.49
  5. Step 5: Solve for x
    x = 329,234,649.49/20,557.50
  6. Step 6: Final answer
    x = 16,015.31

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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.