Home / 13,880.59-20,821.05-4,520.65

Finding the Fourth Proportional to 13,880.59, 20,821.05 and 4,520.65

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Solution

The fourth proportional to 13,880.59, 20,821.05 and 4,520.65 is: 6,781.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,880.59 : 20,821.05 = 4,520.65 : x
  2. Step 2: Convert to fraction form
    13,880.59/20,821.05 = 4,520.65/x
  3. Step 3: Cross multiply
    13,880.59x = 20,821.05 × 4,520.65
  4. Step 4: Simplify right side
    13,880.59x = 94,124,679.68
  5. Step 5: Solve for x
    x = 94,124,679.68/13,880.59
  6. Step 6: Final answer
    x = 6,781.03

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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.