Home / 12,429.03-18,633-5,403.75

Finding the Fourth Proportional to 12,429.03, 18,633 and 5,403.75

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Solution

The fourth proportional to 12,429.03, 18,633 and 5,403.75 is: 8,101.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429.03 : 18,633 = 5,403.75 : x
  2. Step 2: Convert to fraction form
    12,429.03/18,633 = 5,403.75/x
  3. Step 3: Cross multiply
    12,429.03x = 18,633 × 5,403.75
  4. Step 4: Simplify right side
    12,429.03x = 100,688,073.75
  5. Step 5: Solve for x
    x = 100,688,073.75/12,429.03
  6. Step 6: Final answer
    x = 8,101.04

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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.