Home / 15,092.57-20,828.66-8,720.33

Finding the Fourth Proportional to 15,092.57, 20,828.66 and 8,720.33

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Solution

The fourth proportional to 15,092.57, 20,828.66 and 8,720.33 is: 12,034.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,092.57 : 20,828.66 = 8,720.33 : x
  2. Step 2: Convert to fraction form
    15,092.57/20,828.66 = 8,720.33/x
  3. Step 3: Cross multiply
    15,092.57x = 20,828.66 × 8,720.33
  4. Step 4: Simplify right side
    15,092.57x = 181,632,640.91
  5. Step 5: Solve for x
    x = 181,632,640.91/15,092.57
  6. Step 6: Final answer
    x = 12,034.57

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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.