Home / 11,120.10-16,685.80-4,878.49

Finding the Fourth Proportional to 11,120.10, 16,685.80 and 4,878.49

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Solution

The fourth proportional to 11,120.10, 16,685.80 and 4,878.49 is: 7,320.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,120.10 : 16,685.80 = 4,878.49 : x
  2. Step 2: Convert to fraction form
    11,120.10/16,685.80 = 4,878.49/x
  3. Step 3: Cross multiply
    11,120.10x = 16,685.80 × 4,878.49
  4. Step 4: Simplify right side
    11,120.10x = 81,401,504.11
  5. Step 5: Solve for x
    x = 81,401,504.11/11,120.10
  6. Step 6: Final answer
    x = 7,320.22

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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.