Home / 13,240.56-18,272.16-7,272.78

Finding the Fourth Proportional to 13,240.56, 18,272.16 and 7,272.78

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Solution

The fourth proportional to 13,240.56, 18,272.16 and 7,272.78 is: 10,036.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.56 : 18,272.16 = 7,272.78 : x
  2. Step 2: Convert to fraction form
    13,240.56/18,272.16 = 7,272.78/x
  3. Step 3: Cross multiply
    13,240.56x = 18,272.16 × 7,272.78
  4. Step 4: Simplify right side
    13,240.56x = 132,889,399.80
  5. Step 5: Solve for x
    x = 132,889,399.80/13,240.56
  6. Step 6: Final answer
    x = 10,036.54

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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.