Home / 15,653.07-21,601.08-8,579.61

Finding the Fourth Proportional to 15,653.07, 21,601.08 and 8,579.61

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Solution

The fourth proportional to 15,653.07, 21,601.08 and 8,579.61 is: 11,839.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,653.07 : 21,601.08 = 8,579.61 : x
  2. Step 2: Convert to fraction form
    15,653.07/21,601.08 = 8,579.61/x
  3. Step 3: Cross multiply
    15,653.07x = 21,601.08 × 8,579.61
  4. Step 4: Simplify right side
    15,653.07x = 185,328,841.98
  5. Step 5: Solve for x
    x = 185,328,841.98/15,653.07
  6. Step 6: Final answer
    x = 11,839.78

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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.