Home / 13,458.54-20,184.32-5,136.09

Finding the Fourth Proportional to 13,458.54, 20,184.32 and 5,136.09

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Solution

The fourth proportional to 13,458.54, 20,184.32 and 5,136.09 is: 7,702.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,458.54 : 20,184.32 = 5,136.09 : x
  2. Step 2: Convert to fraction form
    13,458.54/20,184.32 = 5,136.09/x
  3. Step 3: Cross multiply
    13,458.54x = 20,184.32 × 5,136.09
  4. Step 4: Simplify right side
    13,458.54x = 103,668,458.43
  5. Step 5: Solve for x
    x = 103,668,458.43/13,458.54
  6. Step 6: Final answer
    x = 7,702.80

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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.