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Finding the Fourth Proportional to 10,603.36, 15,912.08 and 7,097.28

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Solution

The fourth proportional to 10,603.36, 15,912.08 and 7,097.28 is: 10,650.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,603.36 : 15,912.08 = 7,097.28 : x
  2. Step 2: Convert to fraction form
    10,603.36/15,912.08 = 7,097.28/x
  3. Step 3: Cross multiply
    10,603.36x = 15,912.08 × 7,097.28
  4. Step 4: Simplify right side
    10,603.36x = 112,932,487.14
  5. Step 5: Solve for x
    x = 112,932,487.14/10,603.36
  6. Step 6: Final answer
    x = 10,650.63

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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.