Home / 28,995.68-39,975.96-20,922.56

Finding the Fourth Proportional to 28,995.68, 39,975.96 and 20,922.56

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Solution

The fourth proportional to 28,995.68, 39,975.96 and 20,922.56 is: 28,845.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,995.68 : 39,975.96 = 20,922.56 : x
  2. Step 2: Convert to fraction form
    28,995.68/39,975.96 = 20,922.56/x
  3. Step 3: Cross multiply
    28,995.68x = 39,975.96 × 20,922.56
  4. Step 4: Simplify right side
    28,995.68x = 836,399,421.66
  5. Step 5: Solve for x
    x = 836,399,421.66/28,995.68
  6. Step 6: Final answer
    x = 28,845.66

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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.