Home / 18,220.86-27,332.97-7,128.42

Finding the Fourth Proportional to 18,220.86, 27,332.97 and 7,128.42

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Solution

The fourth proportional to 18,220.86, 27,332.97 and 7,128.42 is: 10,693.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,220.86 : 27,332.97 = 7,128.42 : x
  2. Step 2: Convert to fraction form
    18,220.86/27,332.97 = 7,128.42/x
  3. Step 3: Cross multiply
    18,220.86x = 27,332.97 × 7,128.42
  4. Step 4: Simplify right side
    18,220.86x = 194,840,890.01
  5. Step 5: Solve for x
    x = 194,840,890.01/18,220.86
  6. Step 6: Final answer
    x = 10,693.29

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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.