Home / 10,421.85-15,634.38-3,494.73

Finding the Fourth Proportional to 10,421.85, 15,634.38 and 3,494.73

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Solution

The fourth proportional to 10,421.85, 15,634.38 and 3,494.73 is: 5,242.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,421.85 : 15,634.38 = 3,494.73 : x
  2. Step 2: Convert to fraction form
    10,421.85/15,634.38 = 3,494.73/x
  3. Step 3: Cross multiply
    10,421.85x = 15,634.38 × 3,494.73
  4. Step 4: Simplify right side
    10,421.85x = 54,637,936.82
  5. Step 5: Solve for x
    x = 54,637,936.82/10,421.85
  6. Step 6: Final answer
    x = 5,242.63

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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.