Home / 12,427.56-17,149.14-7,122.24

Finding the Fourth Proportional to 12,427.56, 17,149.14 and 7,122.24

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Solution

The fourth proportional to 12,427.56, 17,149.14 and 7,122.24 is: 9,828.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,427.56 : 17,149.14 = 7,122.24 : x
  2. Step 2: Convert to fraction form
    12,427.56/17,149.14 = 7,122.24/x
  3. Step 3: Cross multiply
    12,427.56x = 17,149.14 × 7,122.24
  4. Step 4: Simplify right side
    12,427.56x = 122,140,290.87
  5. Step 5: Solve for x
    x = 122,140,290.87/12,427.56
  6. Step 6: Final answer
    x = 9,828.18

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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.