Home / 13,172.02-18,192.38-8,857.62

Finding the Fourth Proportional to 13,172.02, 18,192.38 and 8,857.62

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Solution

The fourth proportional to 13,172.02, 18,192.38 and 8,857.62 is: 12,233.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,172.02 : 18,192.38 = 8,857.62 : x
  2. Step 2: Convert to fraction form
    13,172.02/18,192.38 = 8,857.62/x
  3. Step 3: Cross multiply
    13,172.02x = 18,192.38 × 8,857.62
  4. Step 4: Simplify right side
    13,172.02x = 161,141,144.65
  5. Step 5: Solve for x
    x = 161,141,144.65/13,172.02
  6. Step 6: Final answer
    x = 12,233.60

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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.