Home / 20,783.81-31,175.57-5,201.44

Finding the Fourth Proportional to 20,783.81, 31,175.57 and 5,201.44

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Solution

The fourth proportional to 20,783.81, 31,175.57 and 5,201.44 is: 7,802.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,783.81 : 31,175.57 = 5,201.44 : x
  2. Step 2: Convert to fraction form
    20,783.81/31,175.57 = 5,201.44/x
  3. Step 3: Cross multiply
    20,783.81x = 31,175.57 × 5,201.44
  4. Step 4: Simplify right side
    20,783.81x = 162,157,791.89
  5. Step 5: Solve for x
    x = 162,157,791.89/20,783.81
  6. Step 6: Final answer
    x = 7,802.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.