Home / 15,336.67-21,158.61-8,620.75

Finding the Fourth Proportional to 15,336.67, 21,158.61 and 8,620.75

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Solution

The fourth proportional to 15,336.67, 21,158.61 and 8,620.75 is: 11,893.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,336.67 : 21,158.61 = 8,620.75 : x
  2. Step 2: Convert to fraction form
    15,336.67/21,158.61 = 8,620.75/x
  3. Step 3: Cross multiply
    15,336.67x = 21,158.61 × 8,620.75
  4. Step 4: Simplify right side
    15,336.67x = 182,403,087.16
  5. Step 5: Solve for x
    x = 182,403,087.16/15,336.67
  6. Step 6: Final answer
    x = 11,893.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.