Home / 12,459.95-18,685.49-4,137.73

Finding the Fourth Proportional to 12,459.95, 18,685.49 and 4,137.73

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Solution

The fourth proportional to 12,459.95, 18,685.49 and 4,137.73 is: 6,205.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,459.95 : 18,685.49 = 4,137.73 : x
  2. Step 2: Convert to fraction form
    12,459.95/18,685.49 = 4,137.73/x
  3. Step 3: Cross multiply
    12,459.95x = 18,685.49 × 4,137.73
  4. Step 4: Simplify right side
    12,459.95x = 77,315,445.14
  5. Step 5: Solve for x
    x = 77,315,445.14/12,459.95
  6. Step 6: Final answer
    x = 6,205.12

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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.