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Finding the Fourth Proportional to 9,902.80, 14,825.04 and 7,317.28

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Solution

The fourth proportional to 9,902.80, 14,825.04 and 7,317.28 is: 10,954.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,902.80 : 14,825.04 = 7,317.28 : x
  2. Step 2: Convert to fraction form
    9,902.80/14,825.04 = 7,317.28/x
  3. Step 3: Cross multiply
    9,902.80x = 14,825.04 × 7,317.28
  4. Step 4: Simplify right side
    9,902.80x = 108,478,968.69
  5. Step 5: Solve for x
    x = 108,478,968.69/9,902.80
  6. Step 6: Final answer
    x = 10,954.37

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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.