Home / 28,107.34-38,783.44-16,781.42

Finding the Fourth Proportional to 28,107.34, 38,783.44 and 16,781.42

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Solution

The fourth proportional to 28,107.34, 38,783.44 and 16,781.42 is: 23,155.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,107.34 : 38,783.44 = 16,781.42 : x
  2. Step 2: Convert to fraction form
    28,107.34/38,783.44 = 16,781.42/x
  3. Step 3: Cross multiply
    28,107.34x = 38,783.44 × 16,781.42
  4. Step 4: Simplify right side
    28,107.34x = 650,841,195.68
  5. Step 5: Solve for x
    x = 650,841,195.68/28,107.34
  6. Step 6: Final answer
    x = 23,155.56

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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.