Home / 12,483.99-18,719.73-4,161.15

Finding the Fourth Proportional to 12,483.99, 18,719.73 and 4,161.15

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Solution

The fourth proportional to 12,483.99, 18,719.73 and 4,161.15 is: 6,239.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,483.99 : 18,719.73 = 4,161.15 : x
  2. Step 2: Convert to fraction form
    12,483.99/18,719.73 = 4,161.15/x
  3. Step 3: Cross multiply
    12,483.99x = 18,719.73 × 4,161.15
  4. Step 4: Simplify right side
    12,483.99x = 77,895,604.49
  5. Step 5: Solve for x
    x = 77,895,604.49/12,483.99
  6. Step 6: Final answer
    x = 6,239.64

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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.