Home / 13,435.38-18,535.06-8,390.83

Finding the Fourth Proportional to 13,435.38, 18,535.06 and 8,390.83

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Solution

The fourth proportional to 13,435.38, 18,535.06 and 8,390.83 is: 11,575.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,435.38 : 18,535.06 = 8,390.83 : x
  2. Step 2: Convert to fraction form
    13,435.38/18,535.06 = 8,390.83/x
  3. Step 3: Cross multiply
    13,435.38x = 18,535.06 × 8,390.83
  4. Step 4: Simplify right side
    13,435.38x = 155,524,537.50
  5. Step 5: Solve for x
    x = 155,524,537.50/13,435.38
  6. Step 6: Final answer
    x = 11,575.75

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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.