Home / 13,172.04-18,159.66-8,448.12

Finding the Fourth Proportional to 13,172.04, 18,159.66 and 8,448.12

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Solution

The fourth proportional to 13,172.04, 18,159.66 and 8,448.12 is: 11,647.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,172.04 : 18,159.66 = 8,448.12 : x
  2. Step 2: Convert to fraction form
    13,172.04/18,159.66 = 8,448.12/x
  3. Step 3: Cross multiply
    13,172.04x = 18,159.66 × 8,448.12
  4. Step 4: Simplify right side
    13,172.04x = 153,414,986.84
  5. Step 5: Solve for x
    x = 153,414,986.84/13,172.04
  6. Step 6: Final answer
    x = 11,647.02

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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.