Home / 12,388.14-17,090.19-7,671.51

Finding the Fourth Proportional to 12,388.14, 17,090.19 and 7,671.51

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Solution

The fourth proportional to 12,388.14, 17,090.19 and 7,671.51 is: 10,583.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.14 : 17,090.19 = 7,671.51 : x
  2. Step 2: Convert to fraction form
    12,388.14/17,090.19 = 7,671.51/x
  3. Step 3: Cross multiply
    12,388.14x = 17,090.19 × 7,671.51
  4. Step 4: Simplify right side
    12,388.14x = 131,107,563.49
  5. Step 5: Solve for x
    x = 131,107,563.49/12,388.14
  6. Step 6: Final answer
    x = 10,583.31

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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.