Home / 20,582.70-28,405.20-11,630.58

Finding the Fourth Proportional to 20,582.70, 28,405.20 and 11,630.58

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Solution

The fourth proportional to 20,582.70, 28,405.20 and 11,630.58 is: 16,050.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.70 : 28,405.20 = 11,630.58 : x
  2. Step 2: Convert to fraction form
    20,582.70/28,405.20 = 11,630.58/x
  3. Step 3: Cross multiply
    20,582.70x = 28,405.20 × 11,630.58
  4. Step 4: Simplify right side
    20,582.70x = 330,368,951.02
  5. Step 5: Solve for x
    x = 330,368,951.02/20,582.70
  6. Step 6: Final answer
    x = 16,050.81

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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.