Home / 21,853.20-32,784.61-12,976.60

Finding the Fourth Proportional to 21,853.20, 32,784.61 and 12,976.60

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Solution

The fourth proportional to 21,853.20, 32,784.61 and 12,976.60 is: 19,467.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,853.20 : 32,784.61 = 12,976.60 : x
  2. Step 2: Convert to fraction form
    21,853.20/32,784.61 = 12,976.60/x
  3. Step 3: Cross multiply
    21,853.20x = 32,784.61 × 12,976.60
  4. Step 4: Simplify right side
    21,853.20x = 425,432,736.72
  5. Step 5: Solve for x
    x = 425,432,736.72/21,853.20
  6. Step 6: Final answer
    x = 19,467.76

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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.