Home / 11,722.45-17,567.26-8,420.08

Finding the Fourth Proportional to 11,722.45, 17,567.26 and 8,420.08

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Solution

The fourth proportional to 11,722.45, 17,567.26 and 8,420.08 is: 12,618.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,722.45 : 17,567.26 = 8,420.08 : x
  2. Step 2: Convert to fraction form
    11,722.45/17,567.26 = 8,420.08/x
  3. Step 3: Cross multiply
    11,722.45x = 17,567.26 × 8,420.08
  4. Step 4: Simplify right side
    11,722.45x = 147,917,734.58
  5. Step 5: Solve for x
    x = 147,917,734.58/11,722.45
  6. Step 6: Final answer
    x = 12,618.33

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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.