Home / 12,458.21-17,190.36-7,422.30

Finding the Fourth Proportional to 12,458.21, 17,190.36 and 7,422.30

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Solution

The fourth proportional to 12,458.21, 17,190.36 and 7,422.30 is: 10,241.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458.21 : 17,190.36 = 7,422.30 : x
  2. Step 2: Convert to fraction form
    12,458.21/17,190.36 = 7,422.30/x
  3. Step 3: Cross multiply
    12,458.21x = 17,190.36 × 7,422.30
  4. Step 4: Simplify right side
    12,458.21x = 127,592,009.03
  5. Step 5: Solve for x
    x = 127,592,009.03/12,458.21
  6. Step 6: Final answer
    x = 10,241.60

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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.