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Finding the Fourth Proportional to 18,673.44, 28,007.64 and 7,586.16

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Solution

The fourth proportional to 18,673.44, 28,007.64 and 7,586.16 is: 11,378.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,673.44 : 28,007.64 = 7,586.16 : x
  2. Step 2: Convert to fraction form
    18,673.44/28,007.64 = 7,586.16/x
  3. Step 3: Cross multiply
    18,673.44x = 28,007.64 × 7,586.16
  4. Step 4: Simplify right side
    18,673.44x = 212,470,438.26
  5. Step 5: Solve for x
    x = 212,470,438.26/18,673.44
  6. Step 6: Final answer
    x = 11,378.22

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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.