Home / 13,790.68-20,667.39-9,886.48

Finding the Fourth Proportional to 13,790.68, 20,667.39 and 9,886.48

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Solution

The fourth proportional to 13,790.68, 20,667.39 and 9,886.48 is: 14,816.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,790.68 : 20,667.39 = 9,886.48 : x
  2. Step 2: Convert to fraction form
    13,790.68/20,667.39 = 9,886.48/x
  3. Step 3: Cross multiply
    13,790.68x = 20,667.39 × 9,886.48
  4. Step 4: Simplify right side
    13,790.68x = 204,327,737.89
  5. Step 5: Solve for x
    x = 204,327,737.89/13,790.68
  6. Step 6: Final answer
    x = 14,816.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.