Home / 13,169.79-18,173.36-7,200.19

Finding the Fourth Proportional to 13,169.79, 18,173.36 and 7,200.19

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Solution

The fourth proportional to 13,169.79, 18,173.36 and 7,200.19 is: 9,935.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,169.79 : 18,173.36 = 7,200.19 : x
  2. Step 2: Convert to fraction form
    13,169.79/18,173.36 = 7,200.19/x
  3. Step 3: Cross multiply
    13,169.79x = 18,173.36 × 7,200.19
  4. Step 4: Simplify right side
    13,169.79x = 130,851,685.66
  5. Step 5: Solve for x
    x = 130,851,685.66/13,169.79
  6. Step 6: Final answer
    x = 9,935.75

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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.