Home / 18,090.24-27,129.60-8,862.72

Finding the Fourth Proportional to 18,090.24, 27,129.60 and 8,862.72

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Solution

The fourth proportional to 18,090.24, 27,129.60 and 8,862.72 is: 13,291.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,090.24 : 27,129.60 = 8,862.72 : x
  2. Step 2: Convert to fraction form
    18,090.24/27,129.60 = 8,862.72/x
  3. Step 3: Cross multiply
    18,090.24x = 27,129.60 × 8,862.72
  4. Step 4: Simplify right side
    18,090.24x = 240,442,048.51
  5. Step 5: Solve for x
    x = 240,442,048.51/18,090.24
  6. Step 6: Final answer
    x = 13,291.26

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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.