Home / 20,704.72-28,572.65-11,752.37

Finding the Fourth Proportional to 20,704.72, 28,572.65 and 11,752.37

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Solution

The fourth proportional to 20,704.72, 28,572.65 and 11,752.37 is: 16,218.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,704.72 : 28,572.65 = 11,752.37 : x
  2. Step 2: Convert to fraction form
    20,704.72/28,572.65 = 11,752.37/x
  3. Step 3: Cross multiply
    20,704.72x = 28,572.65 × 11,752.37
  4. Step 4: Simplify right side
    20,704.72x = 335,796,295.92
  5. Step 5: Solve for x
    x = 335,796,295.92/20,704.72
  6. Step 6: Final answer
    x = 16,218.35

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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.