Home / 12,004.83-18,005.13-5,429.48

Finding the Fourth Proportional to 12,004.83, 18,005.13 and 5,429.48

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Solution

The fourth proportional to 12,004.83, 18,005.13 and 5,429.48 is: 8,143.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,004.83 : 18,005.13 = 5,429.48 : x
  2. Step 2: Convert to fraction form
    12,004.83/18,005.13 = 5,429.48/x
  3. Step 3: Cross multiply
    12,004.83x = 18,005.13 × 5,429.48
  4. Step 4: Simplify right side
    12,004.83x = 97,758,403.21
  5. Step 5: Solve for x
    x = 97,758,403.21/12,004.83
  6. Step 6: Final answer
    x = 8,143.26

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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.