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Finding the Fourth Proportional to 9,980.44, 14,954.24 and 7,913.72

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Solution

The fourth proportional to 9,980.44, 14,954.24 and 7,913.72 is: 11,857.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,980.44 : 14,954.24 = 7,913.72 : x
  2. Step 2: Convert to fraction form
    9,980.44/14,954.24 = 7,913.72/x
  3. Step 3: Cross multiply
    9,980.44x = 14,954.24 × 7,913.72
  4. Step 4: Simplify right side
    9,980.44x = 118,343,668.17
  5. Step 5: Solve for x
    x = 118,343,668.17/9,980.44
  6. Step 6: Final answer
    x = 11,857.56

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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.