Home / 20,660.50-28,518.24-12,162.52

Finding the Fourth Proportional to 20,660.50, 28,518.24 and 12,162.52

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Solution

The fourth proportional to 20,660.50, 28,518.24 and 12,162.52 is: 16,788.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,660.50 : 28,518.24 = 12,162.52 : x
  2. Step 2: Convert to fraction form
    20,660.50/28,518.24 = 12,162.52/x
  3. Step 3: Cross multiply
    20,660.50x = 28,518.24 × 12,162.52
  4. Step 4: Simplify right side
    20,660.50x = 346,853,664.36
  5. Step 5: Solve for x
    x = 346,853,664.36/20,660.50
  6. Step 6: Final answer
    x = 16,788.25

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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.