Home / 15,290.86-21,102.22-8,578.60

Finding the Fourth Proportional to 15,290.86, 21,102.22 and 8,578.60

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Solution

The fourth proportional to 15,290.86, 21,102.22 and 8,578.60 is: 11,838.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,290.86 : 21,102.22 = 8,578.60 : x
  2. Step 2: Convert to fraction form
    15,290.86/21,102.22 = 8,578.60/x
  3. Step 3: Cross multiply
    15,290.86x = 21,102.22 × 8,578.60
  4. Step 4: Simplify right side
    15,290.86x = 181,027,504.49
  5. Step 5: Solve for x
    x = 181,027,504.49/15,290.86
  6. Step 6: Final answer
    x = 11,838.94

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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.