Home / 20,596.90-28,424.67-11,644.78

Finding the Fourth Proportional to 20,596.90, 28,424.67 and 11,644.78

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Solution

The fourth proportional to 20,596.90, 28,424.67 and 11,644.78 is: 16,070.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,596.90 : 28,424.67 = 11,644.78 : x
  2. Step 2: Convert to fraction form
    20,596.90/28,424.67 = 11,644.78/x
  3. Step 3: Cross multiply
    20,596.90x = 28,424.67 × 11,644.78
  4. Step 4: Simplify right side
    20,596.90x = 330,998,957.66
  5. Step 5: Solve for x
    x = 330,998,957.66/20,596.90
  6. Step 6: Final answer
    x = 16,070.33

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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.