Home / 20,719.26-28,596.28-12,220.86

Finding the Fourth Proportional to 20,719.26, 28,596.28 and 12,220.86

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Solution

The fourth proportional to 20,719.26, 28,596.28 and 12,220.86 is: 16,866.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719.26 : 28,596.28 = 12,220.86 : x
  2. Step 2: Convert to fraction form
    20,719.26/28,596.28 = 12,220.86/x
  3. Step 3: Cross multiply
    20,719.26x = 28,596.28 × 12,220.86
  4. Step 4: Simplify right side
    20,719.26x = 349,471,134.40
  5. Step 5: Solve for x
    x = 349,471,134.40/20,719.26
  6. Step 6: Final answer
    x = 16,866.97

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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.