Home / 15,929.26-21,982.94-8,759.72

Finding the Fourth Proportional to 15,929.26, 21,982.94 and 8,759.72

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Solution

The fourth proportional to 15,929.26, 21,982.94 and 8,759.72 is: 12,088.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,929.26 : 21,982.94 = 8,759.72 : x
  2. Step 2: Convert to fraction form
    15,929.26/21,982.94 = 8,759.72/x
  3. Step 3: Cross multiply
    15,929.26x = 21,982.94 × 8,759.72
  4. Step 4: Simplify right side
    15,929.26x = 192,564,399.18
  5. Step 5: Solve for x
    x = 192,564,399.18/15,929.26
  6. Step 6: Final answer
    x = 12,088.72

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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.