Home / 12,085.20-18,127.80-7,951.56

Finding the Fourth Proportional to 12,085.20, 18,127.80 and 7,951.56

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Solution

The fourth proportional to 12,085.20, 18,127.80 and 7,951.56 is: 11,927.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,085.20 : 18,127.80 = 7,951.56 : x
  2. Step 2: Convert to fraction form
    12,085.20/18,127.80 = 7,951.56/x
  3. Step 3: Cross multiply
    12,085.20x = 18,127.80 × 7,951.56
  4. Step 4: Simplify right side
    12,085.20x = 144,144,289.37
  5. Step 5: Solve for x
    x = 144,144,289.37/12,085.20
  6. Step 6: Final answer
    x = 11,927.34

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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.