Home / 13,168.02-18,172.60-7,199.79

Finding the Fourth Proportional to 13,168.02, 18,172.60 and 7,199.79

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Solution

The fourth proportional to 13,168.02, 18,172.60 and 7,199.79 is: 9,936.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,168.02 : 18,172.60 = 7,199.79 : x
  2. Step 2: Convert to fraction form
    13,168.02/18,172.60 = 7,199.79/x
  3. Step 3: Cross multiply
    13,168.02x = 18,172.60 × 7,199.79
  4. Step 4: Simplify right side
    13,168.02x = 130,838,858.11
  5. Step 5: Solve for x
    x = 130,838,858.11/13,168.02
  6. Step 6: Final answer
    x = 9,936.11

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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.