Home / 12,444.03-17,172.14-7,728.21

Finding the Fourth Proportional to 12,444.03, 17,172.14 and 7,728.21

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Solution

The fourth proportional to 12,444.03, 17,172.14 and 7,728.21 is: 10,664.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,444.03 : 17,172.14 = 7,728.21 : x
  2. Step 2: Convert to fraction form
    12,444.03/17,172.14 = 7,728.21/x
  3. Step 3: Cross multiply
    12,444.03x = 17,172.14 × 7,728.21
  4. Step 4: Simplify right side
    12,444.03x = 132,709,865.43
  5. Step 5: Solve for x
    x = 132,709,865.43/12,444.03
  6. Step 6: Final answer
    x = 10,664.54

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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.