Home / 28,745.61-39,667.62-20,251.14

Finding the Fourth Proportional to 28,745.61, 39,667.62 and 20,251.14

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Solution

The fourth proportional to 28,745.61, 39,667.62 and 20,251.14 is: 27,945.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,745.61 : 39,667.62 = 20,251.14 : x
  2. Step 2: Convert to fraction form
    28,745.61/39,667.62 = 20,251.14/x
  3. Step 3: Cross multiply
    28,745.61x = 39,667.62 × 20,251.14
  4. Step 4: Simplify right side
    28,745.61x = 803,314,327.75
  5. Step 5: Solve for x
    x = 803,314,327.75/28,745.61
  6. Step 6: Final answer
    x = 27,945.64

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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.