Home / 13,317.80-18,379.40-7,575.59

Finding the Fourth Proportional to 13,317.80, 18,379.40 and 7,575.59

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Solution

The fourth proportional to 13,317.80, 18,379.40 and 7,575.59 is: 10,454.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,317.80 : 18,379.40 = 7,575.59 : x
  2. Step 2: Convert to fraction form
    13,317.80/18,379.40 = 7,575.59/x
  3. Step 3: Cross multiply
    13,317.80x = 18,379.40 × 7,575.59
  4. Step 4: Simplify right side
    13,317.80x = 139,234,766.40
  5. Step 5: Solve for x
    x = 139,234,766.40/13,317.80
  6. Step 6: Final answer
    x = 10,454.79

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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.