Home / 21,974.36-32,955.16-12,612.80

Finding the Fourth Proportional to 21,974.36, 32,955.16 and 12,612.80

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Solution

The fourth proportional to 21,974.36, 32,955.16 and 12,612.80 is: 18,915.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,974.36 : 32,955.16 = 12,612.80 : x
  2. Step 2: Convert to fraction form
    21,974.36/32,955.16 = 12,612.80/x
  3. Step 3: Cross multiply
    21,974.36x = 32,955.16 × 12,612.80
  4. Step 4: Simplify right side
    21,974.36x = 415,656,842.05
  5. Step 5: Solve for x
    x = 415,656,842.05/21,974.36
  6. Step 6: Final answer
    x = 18,915.54

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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.