Home / 13,130.37-18,119.97-7,162.02

Finding the Fourth Proportional to 13,130.37, 18,119.97 and 7,162.02

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Solution

The fourth proportional to 13,130.37, 18,119.97 and 7,162.02 is: 9,883.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,130.37 : 18,119.97 = 7,162.02 : x
  2. Step 2: Convert to fraction form
    13,130.37/18,119.97 = 7,162.02/x
  3. Step 3: Cross multiply
    13,130.37x = 18,119.97 × 7,162.02
  4. Step 4: Simplify right side
    13,130.37x = 129,775,587.54
  5. Step 5: Solve for x
    x = 129,775,587.54/13,130.37
  6. Step 6: Final answer
    x = 9,883.62

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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.