Home / 21,928.90-32,878.76-12,072.82

Finding the Fourth Proportional to 21,928.90, 32,878.76 and 12,072.82

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Solution

The fourth proportional to 21,928.90, 32,878.76 and 12,072.82 is: 18,101.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,928.90 : 32,878.76 = 12,072.82 : x
  2. Step 2: Convert to fraction form
    21,928.90/32,878.76 = 12,072.82/x
  3. Step 3: Cross multiply
    21,928.90x = 32,878.76 × 12,072.82
  4. Step 4: Simplify right side
    21,928.90x = 396,939,351.30
  5. Step 5: Solve for x
    x = 396,939,351.30/21,928.90
  6. Step 6: Final answer
    x = 18,101.20

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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.