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Finding the Fourth Proportional to 53,183.72, 79,775.84 and 13,738.10

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Solution

The fourth proportional to 53,183.72, 79,775.84 and 13,738.10 is: 20,607.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,183.72 : 79,775.84 = 13,738.10 : x
  2. Step 2: Convert to fraction form
    53,183.72/79,775.84 = 13,738.10/x
  3. Step 3: Cross multiply
    53,183.72x = 79,775.84 × 13,738.10
  4. Step 4: Simplify right side
    53,183.72x = 1,095,968,467.50
  5. Step 5: Solve for x
    x = 1,095,968,467.50/53,183.72
  6. Step 6: Final answer
    x = 20,607.22

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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.