Home / 20,596.60-28,416.18-12,215.80

Finding the Fourth Proportional to 20,596.60, 28,416.18 and 12,215.80

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Solution

The fourth proportional to 20,596.60, 28,416.18 and 12,215.80 is: 16,853.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,596.60 : 28,416.18 = 12,215.80 : x
  2. Step 2: Convert to fraction form
    20,596.60/28,416.18 = 12,215.80/x
  3. Step 3: Cross multiply
    20,596.60x = 28,416.18 × 12,215.80
  4. Step 4: Simplify right side
    20,596.60x = 347,126,371.64
  5. Step 5: Solve for x
    x = 347,126,371.64/20,596.60
  6. Step 6: Final answer
    x = 16,853.58

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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.