Home / 18,766.36-28,149.60-7,526.80

Finding the Fourth Proportional to 18,766.36, 28,149.60 and 7,526.80

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Solution

The fourth proportional to 18,766.36, 28,149.60 and 7,526.80 is: 11,290.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,766.36 : 28,149.60 = 7,526.80 : x
  2. Step 2: Convert to fraction form
    18,766.36/28,149.60 = 7,526.80/x
  3. Step 3: Cross multiply
    18,766.36x = 28,149.60 × 7,526.80
  4. Step 4: Simplify right side
    18,766.36x = 211,876,409.28
  5. Step 5: Solve for x
    x = 211,876,409.28/18,766.36
  6. Step 6: Final answer
    x = 11,290.22

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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.