Home / 13,148.51-18,144.27-7,179.03

Finding the Fourth Proportional to 13,148.51, 18,144.27 and 7,179.03

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Solution

The fourth proportional to 13,148.51, 18,144.27 and 7,179.03 is: 9,906.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,148.51 : 18,144.27 = 7,179.03 : x
  2. Step 2: Convert to fraction form
    13,148.51/18,144.27 = 7,179.03/x
  3. Step 3: Cross multiply
    13,148.51x = 18,144.27 × 7,179.03
  4. Step 4: Simplify right side
    13,148.51x = 130,258,258.66
  5. Step 5: Solve for x
    x = 130,258,258.66/13,148.51
  6. Step 6: Final answer
    x = 9,906.70

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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.