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Finding the Fourth Proportional to 12,485.68, 17,230.16 and 7,453.16

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Solution

The fourth proportional to 12,485.68, 17,230.16 and 7,453.16 is: 10,285.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,485.68 : 17,230.16 = 7,453.16 : x
  2. Step 2: Convert to fraction form
    12,485.68/17,230.16 = 7,453.16/x
  3. Step 3: Cross multiply
    12,485.68x = 17,230.16 × 7,453.16
  4. Step 4: Simplify right side
    12,485.68x = 128,419,139.31
  5. Step 5: Solve for x
    x = 128,419,139.31/12,485.68
  6. Step 6: Final answer
    x = 10,285.31

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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.