Home / 12,984.08-19,478.72-3,626.78

Finding the Fourth Proportional to 12,984.08, 19,478.72 and 3,626.78

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Solution

The fourth proportional to 12,984.08, 19,478.72 and 3,626.78 is: 5,440.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,984.08 : 19,478.72 = 3,626.78 : x
  2. Step 2: Convert to fraction form
    12,984.08/19,478.72 = 3,626.78/x
  3. Step 3: Cross multiply
    12,984.08x = 19,478.72 × 3,626.78
  4. Step 4: Simplify right side
    12,984.08x = 70,645,013.99
  5. Step 5: Solve for x
    x = 70,645,013.99/12,984.08
  6. Step 6: Final answer
    x = 5,440.89

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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.