Home / 13,980.15-19,295.37-8,015.85

Finding the Fourth Proportional to 13,980.15, 19,295.37 and 8,015.85

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Solution

The fourth proportional to 13,980.15, 19,295.37 and 8,015.85 is: 11,063.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,980.15 : 19,295.37 = 8,015.85 : x
  2. Step 2: Convert to fraction form
    13,980.15/19,295.37 = 8,015.85/x
  3. Step 3: Cross multiply
    13,980.15x = 19,295.37 × 8,015.85
  4. Step 4: Simplify right side
    13,980.15x = 154,668,791.61
  5. Step 5: Solve for x
    x = 154,668,791.61/13,980.15
  6. Step 6: Final answer
    x = 11,063.46

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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.