Home / 10,940.74-15,071.88-8,701.90

Finding the Fourth Proportional to 10,940.74, 15,071.88 and 8,701.90

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Solution

The fourth proportional to 10,940.74, 15,071.88 and 8,701.90 is: 11,987.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,940.74 : 15,071.88 = 8,701.90 : x
  2. Step 2: Convert to fraction form
    10,940.74/15,071.88 = 8,701.90/x
  3. Step 3: Cross multiply
    10,940.74x = 15,071.88 × 8,701.90
  4. Step 4: Simplify right side
    10,940.74x = 131,153,992.57
  5. Step 5: Solve for x
    x = 131,153,992.57/10,940.74
  6. Step 6: Final answer
    x = 11,987.67

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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.