Home / 13,168.89-18,172.67-7,200.41

Finding the Fourth Proportional to 13,168.89, 18,172.67 and 7,200.41

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Solution

The fourth proportional to 13,168.89, 18,172.67 and 7,200.41 is: 9,936.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,168.89 : 18,172.67 = 7,200.41 : x
  2. Step 2: Convert to fraction form
    13,168.89/18,172.67 = 7,200.41/x
  3. Step 3: Cross multiply
    13,168.89x = 18,172.67 × 7,200.41
  4. Step 4: Simplify right side
    13,168.89x = 130,850,547.93
  5. Step 5: Solve for x
    x = 130,850,547.93/13,168.89
  6. Step 6: Final answer
    x = 9,936.34

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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.