Home / 12,456.42-18,684.58-4,137.06

Finding the Fourth Proportional to 12,456.42, 18,684.58 and 4,137.06

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Solution

The fourth proportional to 12,456.42, 18,684.58 and 4,137.06 is: 6,205.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456.42 : 18,684.58 = 4,137.06 : x
  2. Step 2: Convert to fraction form
    12,456.42/18,684.58 = 4,137.06/x
  3. Step 3: Cross multiply
    12,456.42x = 18,684.58 × 4,137.06
  4. Step 4: Simplify right side
    12,456.42x = 77,299,228.53
  5. Step 5: Solve for x
    x = 77,299,228.53/12,456.42
  6. Step 6: Final answer
    x = 6,205.57

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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.