Home / 18,777.86-25,911.67-11,222.68

Finding the Fourth Proportional to 18,777.86, 25,911.67 and 11,222.68

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Solution

The fourth proportional to 18,777.86, 25,911.67 and 11,222.68 is: 15,486.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,777.86 : 25,911.67 = 11,222.68 : x
  2. Step 2: Convert to fraction form
    18,777.86/25,911.67 = 11,222.68/x
  3. Step 3: Cross multiply
    18,777.86x = 25,911.67 × 11,222.68
  4. Step 4: Simplify right side
    18,777.86x = 290,798,380.68
  5. Step 5: Solve for x
    x = 290,798,380.68/18,777.86
  6. Step 6: Final answer
    x = 15,486.24

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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.