Home / 13,316.76-19,968.96-7,771.70

Finding the Fourth Proportional to 13,316.76, 19,968.96 and 7,771.70

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Solution

The fourth proportional to 13,316.76, 19,968.96 and 7,771.70 is: 11,653.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,316.76 : 19,968.96 = 7,771.70 : x
  2. Step 2: Convert to fraction form
    13,316.76/19,968.96 = 7,771.70/x
  3. Step 3: Cross multiply
    13,316.76x = 19,968.96 × 7,771.70
  4. Step 4: Simplify right side
    13,316.76x = 155,192,766.43
  5. Step 5: Solve for x
    x = 155,192,766.43/13,316.76
  6. Step 6: Final answer
    x = 11,653.94

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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.