Home / 12,474.23-17,217.40-7,172.13

Finding the Fourth Proportional to 12,474.23, 17,217.40 and 7,172.13

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Solution

The fourth proportional to 12,474.23, 17,217.40 and 7,172.13 is: 9,899.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,474.23 : 17,217.40 = 7,172.13 : x
  2. Step 2: Convert to fraction form
    12,474.23/17,217.40 = 7,172.13/x
  3. Step 3: Cross multiply
    12,474.23x = 17,217.40 × 7,172.13
  4. Step 4: Simplify right side
    12,474.23x = 123,485,431.06
  5. Step 5: Solve for x
    x = 123,485,431.06/12,474.23
  6. Step 6: Final answer
    x = 9,899.24

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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.