Home / 11,116.40-16,674.60-10,857.20

Finding the Fourth Proportional to 11,116.40, 16,674.60 and 10,857.20

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Solution

The fourth proportional to 11,116.40, 16,674.60 and 10,857.20 is: 16,285.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,116.40 : 16,674.60 = 10,857.20 : x
  2. Step 2: Convert to fraction form
    11,116.40/16,674.60 = 10,857.20/x
  3. Step 3: Cross multiply
    11,116.40x = 16,674.60 × 10,857.20
  4. Step 4: Simplify right side
    11,116.40x = 181,039,467.12
  5. Step 5: Solve for x
    x = 181,039,467.12/11,116.40
  6. Step 6: Final answer
    x = 16,285.80

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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.