Home / 12,519.99-18,778.37-6,278.94

Finding the Fourth Proportional to 12,519.99, 18,778.37 and 6,278.94

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Solution

The fourth proportional to 12,519.99, 18,778.37 and 6,278.94 is: 9,417.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,519.99 : 18,778.37 = 6,278.94 : x
  2. Step 2: Convert to fraction form
    12,519.99/18,778.37 = 6,278.94/x
  3. Step 3: Cross multiply
    12,519.99x = 18,778.37 × 6,278.94
  4. Step 4: Simplify right side
    12,519.99x = 117,908,227.13
  5. Step 5: Solve for x
    x = 117,908,227.13/12,519.99
  6. Step 6: Final answer
    x = 9,417.60

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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.