Home / 18,222.51-25,148.16-12,162.36

Finding the Fourth Proportional to 18,222.51, 25,148.16 and 12,162.36

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Solution

The fourth proportional to 18,222.51, 25,148.16 and 12,162.36 is: 16,784.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,222.51 : 25,148.16 = 12,162.36 : x
  2. Step 2: Convert to fraction form
    18,222.51/25,148.16 = 12,162.36/x
  3. Step 3: Cross multiply
    18,222.51x = 25,148.16 × 12,162.36
  4. Step 4: Simplify right side
    18,222.51x = 305,860,975.26
  5. Step 5: Solve for x
    x = 305,860,975.26/18,222.51
  6. Step 6: Final answer
    x = 16,784.79

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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.