Home / 18,915.52-28,369.62-7,225.96

Finding the Fourth Proportional to 18,915.52, 28,369.62 and 7,225.96

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Solution

The fourth proportional to 18,915.52, 28,369.62 and 7,225.96 is: 10,837.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915.52 : 28,369.62 = 7,225.96 : x
  2. Step 2: Convert to fraction form
    18,915.52/28,369.62 = 7,225.96/x
  3. Step 3: Cross multiply
    18,915.52x = 28,369.62 × 7,225.96
  4. Step 4: Simplify right side
    18,915.52x = 204,997,739.34
  5. Step 5: Solve for x
    x = 204,997,739.34/18,915.52
  6. Step 6: Final answer
    x = 10,837.54

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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.