Home / 18,671.83-28,007.40-4,631.89

Finding the Fourth Proportional to 18,671.83, 28,007.40 and 4,631.89

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Solution

The fourth proportional to 18,671.83, 28,007.40 and 4,631.89 is: 6,947.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671.83 : 28,007.40 = 4,631.89 : x
  2. Step 2: Convert to fraction form
    18,671.83/28,007.40 = 4,631.89/x
  3. Step 3: Cross multiply
    18,671.83x = 28,007.40 × 4,631.89
  4. Step 4: Simplify right side
    18,671.83x = 129,727,195.99
  5. Step 5: Solve for x
    x = 129,727,195.99/18,671.83
  6. Step 6: Final answer
    x = 6,947.75

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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.