Home / 12,749.96-19,124.76-3,984.80

Finding the Fourth Proportional to 12,749.96, 19,124.76 and 3,984.80

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Solution

The fourth proportional to 12,749.96, 19,124.76 and 3,984.80 is: 5,977.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,749.96 : 19,124.76 = 3,984.80 : x
  2. Step 2: Convert to fraction form
    12,749.96/19,124.76 = 3,984.80/x
  3. Step 3: Cross multiply
    12,749.96x = 19,124.76 × 3,984.80
  4. Step 4: Simplify right side
    12,749.96x = 76,208,343.65
  5. Step 5: Solve for x
    x = 76,208,343.65/12,749.96
  6. Step 6: Final answer
    x = 5,977.14

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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.