Home / 12,315.79-18,481.05-4,525.39

Finding the Fourth Proportional to 12,315.79, 18,481.05 and 4,525.39

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Solution

The fourth proportional to 12,315.79, 18,481.05 and 4,525.39 is: 6,790.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,315.79 : 18,481.05 = 4,525.39 : x
  2. Step 2: Convert to fraction form
    12,315.79/18,481.05 = 4,525.39/x
  3. Step 3: Cross multiply
    12,315.79x = 18,481.05 × 4,525.39
  4. Step 4: Simplify right side
    12,315.79x = 83,633,936.23
  5. Step 5: Solve for x
    x = 83,633,936.23/12,315.79
  6. Step 6: Final answer
    x = 6,790.79

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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.