Home / 20,942.01-28,901.75-11,512.53

Finding the Fourth Proportional to 20,942.01, 28,901.75 and 11,512.53

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Solution

The fourth proportional to 20,942.01, 28,901.75 and 11,512.53 is: 15,888.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942.01 : 28,901.75 = 11,512.53 : x
  2. Step 2: Convert to fraction form
    20,942.01/28,901.75 = 11,512.53/x
  3. Step 3: Cross multiply
    20,942.01x = 28,901.75 × 11,512.53
  4. Step 4: Simplify right side
    20,942.01x = 332,732,206.36
  5. Step 5: Solve for x
    x = 332,732,206.36/20,942.01
  6. Step 6: Final answer
    x = 15,888.27

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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.