Home / 21,476.41-32,205.69-8,321.20

Finding the Fourth Proportional to 21,476.41, 32,205.69 and 8,321.20

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Solution

The fourth proportional to 21,476.41, 32,205.69 and 8,321.20 is: 12,478.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,476.41 : 32,205.69 = 8,321.20 : x
  2. Step 2: Convert to fraction form
    21,476.41/32,205.69 = 8,321.20/x
  3. Step 3: Cross multiply
    21,476.41x = 32,205.69 × 8,321.20
  4. Step 4: Simplify right side
    21,476.41x = 267,989,987.63
  5. Step 5: Solve for x
    x = 267,989,987.63/21,476.41
  6. Step 6: Final answer
    x = 12,478.34

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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.