Home / 21,418.45-32,131.33-6,628.86

Finding the Fourth Proportional to 21,418.45, 32,131.33 and 6,628.86

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Solution

The fourth proportional to 21,418.45, 32,131.33 and 6,628.86 is: 9,944.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,418.45 : 32,131.33 = 6,628.86 : x
  2. Step 2: Convert to fraction form
    21,418.45/32,131.33 = 6,628.86/x
  3. Step 3: Cross multiply
    21,418.45x = 32,131.33 × 6,628.86
  4. Step 4: Simplify right side
    21,418.45x = 212,994,071.61
  5. Step 5: Solve for x
    x = 212,994,071.61/21,418.45
  6. Step 6: Final answer
    x = 9,944.42

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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.