Home / 13,785.19-20,667.58-4,419.76

Finding the Fourth Proportional to 13,785.19, 20,667.58 and 4,419.76

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Solution

The fourth proportional to 13,785.19, 20,667.58 and 4,419.76 is: 6,626.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,785.19 : 20,667.58 = 4,419.76 : x
  2. Step 2: Convert to fraction form
    13,785.19/20,667.58 = 4,419.76/x
  3. Step 3: Cross multiply
    13,785.19x = 20,667.58 × 4,419.76
  4. Step 4: Simplify right side
    13,785.19x = 91,345,743.38
  5. Step 5: Solve for x
    x = 91,345,743.38/13,785.19
  6. Step 6: Final answer
    x = 6,626.37

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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.