Home / 10,987.60-16,476.96-6,821.44

Finding the Fourth Proportional to 10,987.60, 16,476.96 and 6,821.44

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Solution

The fourth proportional to 10,987.60, 16,476.96 and 6,821.44 is: 10,229.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987.60 : 16,476.96 = 6,821.44 : x
  2. Step 2: Convert to fraction form
    10,987.60/16,476.96 = 6,821.44/x
  3. Step 3: Cross multiply
    10,987.60x = 16,476.96 × 6,821.44
  4. Step 4: Simplify right side
    10,987.60x = 112,396,594.02
  5. Step 5: Solve for x
    x = 112,396,594.02/10,987.60
  6. Step 6: Final answer
    x = 10,229.40

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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.