Home / 14,974.78-20,661.60-9,668.50

Finding the Fourth Proportional to 14,974.78, 20,661.60 and 9,668.50

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Solution

The fourth proportional to 14,974.78, 20,661.60 and 9,668.50 is: 13,340.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,974.78 : 20,661.60 = 9,668.50 : x
  2. Step 2: Convert to fraction form
    14,974.78/20,661.60 = 9,668.50/x
  3. Step 3: Cross multiply
    14,974.78x = 20,661.60 × 9,668.50
  4. Step 4: Simplify right side
    14,974.78x = 199,766,679.60
  5. Step 5: Solve for x
    x = 199,766,679.60/14,974.78
  6. Step 6: Final answer
    x = 13,340.21

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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.