Home / 13,055.42-18,015.28-7,390.69

Finding the Fourth Proportional to 13,055.42, 18,015.28 and 7,390.69

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Solution

The fourth proportional to 13,055.42, 18,015.28 and 7,390.69 is: 10,198.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,055.42 : 18,015.28 = 7,390.69 : x
  2. Step 2: Convert to fraction form
    13,055.42/18,015.28 = 7,390.69/x
  3. Step 3: Cross multiply
    13,055.42x = 18,015.28 × 7,390.69
  4. Step 4: Simplify right side
    13,055.42x = 133,145,286.23
  5. Step 5: Solve for x
    x = 133,145,286.23/13,055.42
  6. Step 6: Final answer
    x = 10,198.47

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Double scale
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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.