Home / 10,455.05-15,682.29-2,557.61

Finding the Fourth Proportional to 10,455.05, 15,682.29 and 2,557.61

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Solution

The fourth proportional to 10,455.05, 15,682.29 and 2,557.61 is: 3,836.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,455.05 : 15,682.29 = 2,557.61 : x
  2. Step 2: Convert to fraction form
    10,455.05/15,682.29 = 2,557.61/x
  3. Step 3: Cross multiply
    10,455.05x = 15,682.29 × 2,557.61
  4. Step 4: Simplify right side
    10,455.05x = 40,109,181.73
  5. Step 5: Solve for x
    x = 40,109,181.73/10,455.05
  6. Step 6: Final answer
    x = 3,836.35

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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.