Home / 28,190.86-42,233.13-21,920.49

Finding the Fourth Proportional to 28,190.86, 42,233.13 and 21,920.49

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Solution

The fourth proportional to 28,190.86, 42,233.13 and 21,920.49 is: 32,839.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,190.86 : 42,233.13 = 21,920.49 : x
  2. Step 2: Convert to fraction form
    28,190.86/42,233.13 = 21,920.49/x
  3. Step 3: Cross multiply
    28,190.86x = 42,233.13 × 21,920.49
  4. Step 4: Simplify right side
    28,190.86x = 925,770,903.83
  5. Step 5: Solve for x
    x = 925,770,903.83/28,190.86
  6. Step 6: Final answer
    x = 32,839.40

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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.