Home / 13,169.81-18,174.38-7,201.58

Finding the Fourth Proportional to 13,169.81, 18,174.38 and 7,201.58

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Solution

The fourth proportional to 13,169.81, 18,174.38 and 7,201.58 is: 9,938.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,169.81 : 18,174.38 = 7,201.58 : x
  2. Step 2: Convert to fraction form
    13,169.81/18,174.38 = 7,201.58/x
  3. Step 3: Cross multiply
    13,169.81x = 18,174.38 × 7,201.58
  4. Step 4: Simplify right side
    13,169.81x = 130,884,124.64
  5. Step 5: Solve for x
    x = 130,884,124.64/13,169.81
  6. Step 6: Final answer
    x = 9,938.19

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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.