Home / 21,426.40-32,144.40-8,277.60

Finding the Fourth Proportional to 21,426.40, 32,144.40 and 8,277.60

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Solution

The fourth proportional to 21,426.40, 32,144.40 and 8,277.60 is: 12,418.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,426.40 : 32,144.40 = 8,277.60 : x
  2. Step 2: Convert to fraction form
    21,426.40/32,144.40 = 8,277.60/x
  3. Step 3: Cross multiply
    21,426.40x = 32,144.40 × 8,277.60
  4. Step 4: Simplify right side
    21,426.40x = 266,078,485.44
  5. Step 5: Solve for x
    x = 266,078,485.44/21,426.40
  6. Step 6: Final answer
    x = 12,418.25

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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.