Home / 15,812.70-21,817.26-9,100.23

Finding the Fourth Proportional to 15,812.70, 21,817.26 and 9,100.23

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Solution

The fourth proportional to 15,812.70, 21,817.26 and 9,100.23 is: 12,555.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,812.70 : 21,817.26 = 9,100.23 : x
  2. Step 2: Convert to fraction form
    15,812.70/21,817.26 = 9,100.23/x
  3. Step 3: Cross multiply
    15,812.70x = 21,817.26 × 9,100.23
  4. Step 4: Simplify right side
    15,812.70x = 198,542,083.97
  5. Step 5: Solve for x
    x = 198,542,083.97/15,812.70
  6. Step 6: Final answer
    x = 12,555.86

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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.