Home / 15,294.09-21,107.07-8,580.33

Finding the Fourth Proportional to 15,294.09, 21,107.07 and 8,580.33

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Solution

The fourth proportional to 15,294.09, 21,107.07 and 8,580.33 is: 11,841.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,294.09 : 21,107.07 = 8,580.33 : x
  2. Step 2: Convert to fraction form
    15,294.09/21,107.07 = 8,580.33/x
  3. Step 3: Cross multiply
    15,294.09x = 21,107.07 × 8,580.33
  4. Step 4: Simplify right side
    15,294.09x = 181,105,625.93
  5. Step 5: Solve for x
    x = 181,105,625.93/15,294.09
  6. Step 6: Final answer
    x = 11,841.54

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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.