Home / 14,949.90-20,615.58-9,912.38

Finding the Fourth Proportional to 14,949.90, 20,615.58 and 9,912.38

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Solution

The fourth proportional to 14,949.90, 20,615.58 and 9,912.38 is: 13,668.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,949.90 : 20,615.58 = 9,912.38 : x
  2. Step 2: Convert to fraction form
    14,949.90/20,615.58 = 9,912.38/x
  3. Step 3: Cross multiply
    14,949.90x = 20,615.58 × 9,912.38
  4. Step 4: Simplify right side
    14,949.90x = 204,349,359.80
  5. Step 5: Solve for x
    x = 204,349,359.80/14,949.90
  6. Step 6: Final answer
    x = 13,668.94

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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.