Home / 15,669.12-21,619.92-9,292.56

Finding the Fourth Proportional to 15,669.12, 21,619.92 and 9,292.56

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Solution

The fourth proportional to 15,669.12, 21,619.92 and 9,292.56 is: 12,821.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,669.12 : 21,619.92 = 9,292.56 : x
  2. Step 2: Convert to fraction form
    15,669.12/21,619.92 = 9,292.56/x
  3. Step 3: Cross multiply
    15,669.12x = 21,619.92 × 9,292.56
  4. Step 4: Simplify right side
    15,669.12x = 200,904,403.80
  5. Step 5: Solve for x
    x = 200,904,403.80/15,669.12
  6. Step 6: Final answer
    x = 12,821.68

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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.