Home / 20,793.51-31,172.04-9,102.78

Finding the Fourth Proportional to 20,793.51, 31,172.04 and 9,102.78

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Solution

The fourth proportional to 20,793.51, 31,172.04 and 9,102.78 is: 13,646.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793.51 : 31,172.04 = 9,102.78 : x
  2. Step 2: Convert to fraction form
    20,793.51/31,172.04 = 9,102.78/x
  3. Step 3: Cross multiply
    20,793.51x = 31,172.04 × 9,102.78
  4. Step 4: Simplify right side
    20,793.51x = 283,752,222.27
  5. Step 5: Solve for x
    x = 283,752,222.27/20,793.51
  6. Step 6: Final answer
    x = 13,646.19

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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.