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Finding the Fourth Proportional to 9,996.40, 15,004.20 and 5,071.60

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Solution

The fourth proportional to 9,996.40, 15,004.20 and 5,071.60 is: 7,612.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,996.40 : 15,004.20 = 5,071.60 : x
  2. Step 2: Convert to fraction form
    9,996.40/15,004.20 = 5,071.60/x
  3. Step 3: Cross multiply
    9,996.40x = 15,004.20 × 5,071.60
  4. Step 4: Simplify right side
    9,996.40x = 76,095,300.72
  5. Step 5: Solve for x
    x = 76,095,300.72/9,996.40
  6. Step 6: Final answer
    x = 7,612.27

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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.