Home / 13,172.01-18,177.38-7,429.53

Finding the Fourth Proportional to 13,172.01, 18,177.38 and 7,429.53

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Solution

The fourth proportional to 13,172.01, 18,177.38 and 7,429.53 is: 10,252.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,172.01 : 18,177.38 = 7,429.53 : x
  2. Step 2: Convert to fraction form
    13,172.01/18,177.38 = 7,429.53/x
  3. Step 3: Cross multiply
    13,172.01x = 18,177.38 × 7,429.53
  4. Step 4: Simplify right side
    13,172.01x = 135,049,448.91
  5. Step 5: Solve for x
    x = 135,049,448.91/13,172.01
  6. Step 6: Final answer
    x = 10,252.76

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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.