Home / 15,928.90-21,982.44-8,759.36

Finding the Fourth Proportional to 15,928.90, 21,982.44 and 8,759.36

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Solution

The fourth proportional to 15,928.90, 21,982.44 and 8,759.36 is: 12,088.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,928.90 : 21,982.44 = 8,759.36 : x
  2. Step 2: Convert to fraction form
    15,928.90/21,982.44 = 8,759.36/x
  3. Step 3: Cross multiply
    15,928.90x = 21,982.44 × 8,759.36
  4. Step 4: Simplify right side
    15,928.90x = 192,552,193.44
  5. Step 5: Solve for x
    x = 192,552,193.44/15,928.90
  6. Step 6: Final answer
    x = 12,088.23

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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.