Home / 12,218.75-18,328.14-2,984.75

Finding the Fourth Proportional to 12,218.75, 18,328.14 and 2,984.75

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Solution

The fourth proportional to 12,218.75, 18,328.14 and 2,984.75 is: 4,477.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.75 : 18,328.14 = 2,984.75 : x
  2. Step 2: Convert to fraction form
    12,218.75/18,328.14 = 2,984.75/x
  3. Step 3: Cross multiply
    12,218.75x = 18,328.14 × 2,984.75
  4. Step 4: Simplify right side
    12,218.75x = 54,704,915.87
  5. Step 5: Solve for x
    x = 54,704,915.87/12,218.75
  6. Step 6: Final answer
    x = 4,477.13

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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.