Home / 28,039.91-38,699.24-18,478.33

Finding the Fourth Proportional to 28,039.91, 38,699.24 and 18,478.33

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Solution

The fourth proportional to 28,039.91, 38,699.24 and 18,478.33 is: 25,502.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,039.91 : 38,699.24 = 18,478.33 : x
  2. Step 2: Convert to fraction form
    28,039.91/38,699.24 = 18,478.33/x
  3. Step 3: Cross multiply
    28,039.91x = 38,699.24 × 18,478.33
  4. Step 4: Simplify right side
    28,039.91x = 715,097,138.33
  5. Step 5: Solve for x
    x = 715,097,138.33/28,039.91
  6. Step 6: Final answer
    x = 25,502.84

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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.