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Finding the Fourth Proportional to 17,720.78, 24,453.77 and 9,762.84

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Solution

The fourth proportional to 17,720.78, 24,453.77 and 9,762.84 is: 13,472.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,720.78 : 24,453.77 = 9,762.84 : x
  2. Step 2: Convert to fraction form
    17,720.78/24,453.77 = 9,762.84/x
  3. Step 3: Cross multiply
    17,720.78x = 24,453.77 × 9,762.84
  4. Step 4: Simplify right side
    17,720.78x = 238,738,195.09
  5. Step 5: Solve for x
    x = 238,738,195.09/17,720.78
  6. Step 6: Final answer
    x = 13,472.22

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1.5x scale

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.