Home / 20,752.32-28,628.94-12,791.64

Finding the Fourth Proportional to 20,752.32, 28,628.94 and 12,791.64

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Solution

The fourth proportional to 20,752.32, 28,628.94 and 12,791.64 is: 17,646.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,752.32 : 28,628.94 = 12,791.64 : x
  2. Step 2: Convert to fraction form
    20,752.32/28,628.94 = 12,791.64/x
  3. Step 3: Cross multiply
    20,752.32x = 28,628.94 × 12,791.64
  4. Step 4: Simplify right side
    20,752.32x = 366,211,094.06
  5. Step 5: Solve for x
    x = 366,211,094.06/20,752.32
  6. Step 6: Final answer
    x = 17,646.75

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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.