Home / 12,378.12-17,089.46-8,600.04

Finding the Fourth Proportional to 12,378.12, 17,089.46 and 8,600.04

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Solution

The fourth proportional to 12,378.12, 17,089.46 and 8,600.04 is: 11,873.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,378.12 : 17,089.46 = 8,600.04 : x
  2. Step 2: Convert to fraction form
    12,378.12/17,089.46 = 8,600.04/x
  3. Step 3: Cross multiply
    12,378.12x = 17,089.46 × 8,600.04
  4. Step 4: Simplify right side
    12,378.12x = 146,970,039.58
  5. Step 5: Solve for x
    x = 146,970,039.58/12,378.12
  6. Step 6: Final answer
    x = 11,873.37

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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.