Home / 12,235.93-18,355.10-3,913.85

Finding the Fourth Proportional to 12,235.93, 18,355.10 and 3,913.85

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Solution

The fourth proportional to 12,235.93, 18,355.10 and 3,913.85 is: 5,871.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,235.93 : 18,355.10 = 3,913.85 : x
  2. Step 2: Convert to fraction form
    12,235.93/18,355.10 = 3,913.85/x
  3. Step 3: Cross multiply
    12,235.93x = 18,355.10 × 3,913.85
  4. Step 4: Simplify right side
    12,235.93x = 71,839,108.14
  5. Step 5: Solve for x
    x = 71,839,108.14/12,235.93
  6. Step 6: Final answer
    x = 5,871.16

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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.