Home / 12,111.59-16,718.56-7,077.44

Finding the Fourth Proportional to 12,111.59, 16,718.56 and 7,077.44

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Solution

The fourth proportional to 12,111.59, 16,718.56 and 7,077.44 is: 9,769.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,111.59 : 16,718.56 = 7,077.44 : x
  2. Step 2: Convert to fraction form
    12,111.59/16,718.56 = 7,077.44/x
  3. Step 3: Cross multiply
    12,111.59x = 16,718.56 × 7,077.44
  4. Step 4: Simplify right side
    12,111.59x = 118,324,611.70
  5. Step 5: Solve for x
    x = 118,324,611.70/12,111.59
  6. Step 6: Final answer
    x = 9,769.54

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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.