Home / 28,120.12-38,795.94-18,047.80

Finding the Fourth Proportional to 28,120.12, 38,795.94 and 18,047.80

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Solution

The fourth proportional to 28,120.12, 38,795.94 and 18,047.80 is: 24,899.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,120.12 : 38,795.94 = 18,047.80 : x
  2. Step 2: Convert to fraction form
    28,120.12/38,795.94 = 18,047.80/x
  3. Step 3: Cross multiply
    28,120.12x = 38,795.94 × 18,047.80
  4. Step 4: Simplify right side
    28,120.12x = 700,181,365.93
  5. Step 5: Solve for x
    x = 700,181,365.93/28,120.12
  6. Step 6: Final answer
    x = 24,899.66

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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.