Home / 15,891.06-21,929.67-8,817.54

Finding the Fourth Proportional to 15,891.06, 21,929.67 and 8,817.54

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Solution

The fourth proportional to 15,891.06, 21,929.67 and 8,817.54 is: 12,168.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,891.06 : 21,929.67 = 8,817.54 : x
  2. Step 2: Convert to fraction form
    15,891.06/21,929.67 = 8,817.54/x
  3. Step 3: Cross multiply
    15,891.06x = 21,929.67 × 8,817.54
  4. Step 4: Simplify right side
    15,891.06x = 193,365,742.41
  5. Step 5: Solve for x
    x = 193,365,742.41/15,891.06
  6. Step 6: Final answer
    x = 12,168.21

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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.