Home / 28,671.86-43,020.48-11,143.02

Finding the Fourth Proportional to 28,671.86, 43,020.48 and 11,143.02

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Solution

The fourth proportional to 28,671.86, 43,020.48 and 11,143.02 is: 16,719.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,671.86 : 43,020.48 = 11,143.02 : x
  2. Step 2: Convert to fraction form
    28,671.86/43,020.48 = 11,143.02/x
  3. Step 3: Cross multiply
    28,671.86x = 43,020.48 × 11,143.02
  4. Step 4: Simplify right side
    28,671.86x = 479,378,069.05
  5. Step 5: Solve for x
    x = 479,378,069.05/28,671.86
  6. Step 6: Final answer
    x = 16,719.46

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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.