Home / 13,667.96-20,488.97-5,345.21

Finding the Fourth Proportional to 13,667.96, 20,488.97 and 5,345.21

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Solution

The fourth proportional to 13,667.96, 20,488.97 and 5,345.21 is: 8,012.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,667.96 : 20,488.97 = 5,345.21 : x
  2. Step 2: Convert to fraction form
    13,667.96/20,488.97 = 5,345.21/x
  3. Step 3: Cross multiply
    13,667.96x = 20,488.97 × 5,345.21
  4. Step 4: Simplify right side
    13,667.96x = 109,517,718.16
  5. Step 5: Solve for x
    x = 109,517,718.16/13,667.96
  6. Step 6: Final answer
    x = 8,012.74

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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.