Home / 11,865.25-16,374.32-7,680.79

Finding the Fourth Proportional to 11,865.25, 16,374.32 and 7,680.79

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Solution

The fourth proportional to 11,865.25, 16,374.32 and 7,680.79 is: 10,599.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,865.25 : 16,374.32 = 7,680.79 : x
  2. Step 2: Convert to fraction form
    11,865.25/16,374.32 = 7,680.79/x
  3. Step 3: Cross multiply
    11,865.25x = 16,374.32 × 7,680.79
  4. Step 4: Simplify right side
    11,865.25x = 125,767,713.31
  5. Step 5: Solve for x
    x = 125,767,713.31/11,865.25
  6. Step 6: Final answer
    x = 10,599.67

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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.