Home / 21,422.45-32,145.83-8,275.75

Finding the Fourth Proportional to 21,422.45, 32,145.83 and 8,275.75

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Solution

The fourth proportional to 21,422.45, 32,145.83 and 8,275.75 is: 12,418.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,422.45 : 32,145.83 = 8,275.75 : x
  2. Step 2: Convert to fraction form
    21,422.45/32,145.83 = 8,275.75/x
  3. Step 3: Cross multiply
    21,422.45x = 32,145.83 × 8,275.75
  4. Step 4: Simplify right side
    21,422.45x = 266,030,852.62
  5. Step 5: Solve for x
    x = 266,030,852.62/21,422.45
  6. Step 6: Final answer
    x = 12,418.32

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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.