Home / 13,693.07-18,879.32-11,427.67

Finding the Fourth Proportional to 13,693.07, 18,879.32 and 11,427.67

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Solution

The fourth proportional to 13,693.07, 18,879.32 and 11,427.67 is: 15,755.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,693.07 : 18,879.32 = 11,427.67 : x
  2. Step 2: Convert to fraction form
    13,693.07/18,879.32 = 11,427.67/x
  3. Step 3: Cross multiply
    13,693.07x = 18,879.32 × 11,427.67
  4. Step 4: Simplify right side
    13,693.07x = 215,746,657.41
  5. Step 5: Solve for x
    x = 215,746,657.41/13,693.07
  6. Step 6: Final answer
    x = 15,755.90

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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.