Home / 12,188.58-18,282.96-3,423.66

Finding the Fourth Proportional to 12,188.58, 18,282.96 and 3,423.66

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Solution

The fourth proportional to 12,188.58, 18,282.96 and 3,423.66 is: 5,135.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.58 : 18,282.96 = 3,423.66 : x
  2. Step 2: Convert to fraction form
    12,188.58/18,282.96 = 3,423.66/x
  3. Step 3: Cross multiply
    12,188.58x = 18,282.96 × 3,423.66
  4. Step 4: Simplify right side
    12,188.58x = 62,594,638.83
  5. Step 5: Solve for x
    x = 62,594,638.83/12,188.58
  6. Step 6: Final answer
    x = 5,135.52

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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.