Home / 12,276.36-16,941.15-7,239.78

Finding the Fourth Proportional to 12,276.36, 16,941.15 and 7,239.78

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Solution

The fourth proportional to 12,276.36, 16,941.15 and 7,239.78 is: 9,990.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,276.36 : 16,941.15 = 7,239.78 : x
  2. Step 2: Convert to fraction form
    12,276.36/16,941.15 = 7,239.78/x
  3. Step 3: Cross multiply
    12,276.36x = 16,941.15 × 7,239.78
  4. Step 4: Simplify right side
    12,276.36x = 122,650,198.95
  5. Step 5: Solve for x
    x = 122,650,198.95/12,276.36
  6. Step 6: Final answer
    x = 9,990.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.