Home / 16,855.56-23,251.32-9,781.20

Finding the Fourth Proportional to 16,855.56, 23,251.32 and 9,781.20

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Solution

The fourth proportional to 16,855.56, 23,251.32 and 9,781.20 is: 13,492.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,855.56 : 23,251.32 = 9,781.20 : x
  2. Step 2: Convert to fraction form
    16,855.56/23,251.32 = 9,781.20/x
  3. Step 3: Cross multiply
    16,855.56x = 23,251.32 × 9,781.20
  4. Step 4: Simplify right side
    16,855.56x = 227,425,811.18
  5. Step 5: Solve for x
    x = 227,425,811.18/16,855.56
  6. Step 6: Final answer
    x = 13,492.63

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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.