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Finding the Fourth Proportional to 13,598.12, 18,765.32 and 7,629.77

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Solution

The fourth proportional to 13,598.12, 18,765.32 and 7,629.77 is: 10,529.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,598.12 : 18,765.32 = 7,629.77 : x
  2. Step 2: Convert to fraction form
    13,598.12/18,765.32 = 7,629.77/x
  3. Step 3: Cross multiply
    13,598.12x = 18,765.32 × 7,629.77
  4. Step 4: Simplify right side
    13,598.12x = 143,174,943.60
  5. Step 5: Solve for x
    x = 143,174,943.60/13,598.12
  6. Step 6: Final answer
    x = 10,529.03

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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.