Home / 12,090.24-18,119.04-9,159.36

Finding the Fourth Proportional to 12,090.24, 18,119.04 and 9,159.36

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Solution

The fourth proportional to 12,090.24, 18,119.04 and 9,159.36 is: 13,726.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,090.24 : 18,119.04 = 9,159.36 : x
  2. Step 2: Convert to fraction form
    12,090.24/18,119.04 = 9,159.36/x
  3. Step 3: Cross multiply
    12,090.24x = 18,119.04 × 9,159.36
  4. Step 4: Simplify right side
    12,090.24x = 165,958,810.21
  5. Step 5: Solve for x
    x = 165,958,810.21/12,090.24
  6. Step 6: Final answer
    x = 13,726.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.