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Finding the Fourth Proportional to 10,906.08, 15,045.60 and 7,368

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Solution

The fourth proportional to 10,906.08, 15,045.60 and 7,368 is: 10,164.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,906.08 : 15,045.60 = 7,368 : x
  2. Step 2: Convert to fraction form
    10,906.08/15,045.60 = 7,368/x
  3. Step 3: Cross multiply
    10,906.08x = 15,045.60 × 7,368
  4. Step 4: Simplify right side
    10,906.08x = 110,855,980.80
  5. Step 5: Solve for x
    x = 110,855,980.80/10,906.08
  6. Step 6: Final answer
    x = 10,164.60

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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.