Home / 13,239.44-18,270.47-7,271.51

Finding the Fourth Proportional to 13,239.44, 18,270.47 and 7,271.51

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Solution

The fourth proportional to 13,239.44, 18,270.47 and 7,271.51 is: 10,034.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.44 : 18,270.47 = 7,271.51 : x
  2. Step 2: Convert to fraction form
    13,239.44/18,270.47 = 7,271.51/x
  3. Step 3: Cross multiply
    13,239.44x = 18,270.47 × 7,271.51
  4. Step 4: Simplify right side
    13,239.44x = 132,853,905.31
  5. Step 5: Solve for x
    x = 132,853,905.31/13,239.44
  6. Step 6: Final answer
    x = 10,034.71

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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.