Home / 20,683.13-28,542.74-11,251.71

Finding the Fourth Proportional to 20,683.13, 28,542.74 and 11,251.71

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Solution

The fourth proportional to 20,683.13, 28,542.74 and 11,251.71 is: 15,527.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,683.13 : 28,542.74 = 11,251.71 : x
  2. Step 2: Convert to fraction form
    20,683.13/28,542.74 = 11,251.71/x
  3. Step 3: Cross multiply
    20,683.13x = 28,542.74 × 11,251.71
  4. Step 4: Simplify right side
    20,683.13x = 321,154,576.83
  5. Step 5: Solve for x
    x = 321,154,576.83/20,683.13
  6. Step 6: Final answer
    x = 15,527.37

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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.