Home / 16,855.40-25,250.70-9,921.80

Finding the Fourth Proportional to 16,855.40, 25,250.70 and 9,921.80

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Solution

The fourth proportional to 16,855.40, 25,250.70 and 9,921.80 is: 14,863.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,855.40 : 25,250.70 = 9,921.80 : x
  2. Step 2: Convert to fraction form
    16,855.40/25,250.70 = 9,921.80/x
  3. Step 3: Cross multiply
    16,855.40x = 25,250.70 × 9,921.80
  4. Step 4: Simplify right side
    16,855.40x = 250,532,395.26
  5. Step 5: Solve for x
    x = 250,532,395.26/16,855.40
  6. Step 6: Final answer
    x = 14,863.63

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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.