Home / 13,168.59-18,172.53-7,200.20

Finding the Fourth Proportional to 13,168.59, 18,172.53 and 7,200.20

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Solution

The fourth proportional to 13,168.59, 18,172.53 and 7,200.20 is: 9,936.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,168.59 : 18,172.53 = 7,200.20 : x
  2. Step 2: Convert to fraction form
    13,168.59/18,172.53 = 7,200.20/x
  3. Step 3: Cross multiply
    13,168.59x = 18,172.53 × 7,200.20
  4. Step 4: Simplify right side
    13,168.59x = 130,845,759.64
  5. Step 5: Solve for x
    x = 130,845,759.64/13,168.59
  6. Step 6: Final answer
    x = 9,936.20

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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.