Home / 15,056.66-20,780.80-8,682.10

Finding the Fourth Proportional to 15,056.66, 20,780.80 and 8,682.10

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Solution

The fourth proportional to 15,056.66, 20,780.80 and 8,682.10 is: 11,982.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,056.66 : 20,780.80 = 8,682.10 : x
  2. Step 2: Convert to fraction form
    15,056.66/20,780.80 = 8,682.10/x
  3. Step 3: Cross multiply
    15,056.66x = 20,780.80 × 8,682.10
  4. Step 4: Simplify right side
    15,056.66x = 180,420,983.68
  5. Step 5: Solve for x
    x = 180,420,983.68/15,056.66
  6. Step 6: Final answer
    x = 11,982.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.