Home / 13,280.23-19,917.27-3,920.89

Finding the Fourth Proportional to 13,280.23, 19,917.27 and 3,920.89

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Solution

The fourth proportional to 13,280.23, 19,917.27 and 3,920.89 is: 5,880.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.23 : 19,917.27 = 3,920.89 : x
  2. Step 2: Convert to fraction form
    13,280.23/19,917.27 = 3,920.89/x
  3. Step 3: Cross multiply
    13,280.23x = 19,917.27 × 3,920.89
  4. Step 4: Simplify right side
    13,280.23x = 78,093,405.17
  5. Step 5: Solve for x
    x = 78,093,405.17/13,280.23
  6. Step 6: Final answer
    x = 5,880.43

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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.