Home / 15,222.69-21,007.74-8,508.33

Finding the Fourth Proportional to 15,222.69, 21,007.74 and 8,508.33

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Solution

The fourth proportional to 15,222.69, 21,007.74 and 8,508.33 is: 11,741.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,222.69 : 21,007.74 = 8,508.33 : x
  2. Step 2: Convert to fraction form
    15,222.69/21,007.74 = 8,508.33/x
  3. Step 3: Cross multiply
    15,222.69x = 21,007.74 × 8,508.33
  4. Step 4: Simplify right side
    15,222.69x = 178,740,784.47
  5. Step 5: Solve for x
    x = 178,740,784.47/15,222.69
  6. Step 6: Final answer
    x = 11,741.73

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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.