Home / 13,240.97-18,272.58-7,272.48

Finding the Fourth Proportional to 13,240.97, 18,272.58 and 7,272.48

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Solution

The fourth proportional to 13,240.97, 18,272.58 and 7,272.48 is: 10,036.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.97 : 18,272.58 = 7,272.48 : x
  2. Step 2: Convert to fraction form
    13,240.97/18,272.58 = 7,272.48/x
  3. Step 3: Cross multiply
    13,240.97x = 18,272.58 × 7,272.48
  4. Step 4: Simplify right side
    13,240.97x = 132,886,972.60
  5. Step 5: Solve for x
    x = 132,886,972.60/13,240.97
  6. Step 6: Final answer
    x = 10,036.05

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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.