Home / 19,388.26-26,755.70-10,890.38

Finding the Fourth Proportional to 19,388.26, 26,755.70 and 10,890.38

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Solution

The fourth proportional to 19,388.26, 26,755.70 and 10,890.38 is: 15,028.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,388.26 : 26,755.70 = 10,890.38 : x
  2. Step 2: Convert to fraction form
    19,388.26/26,755.70 = 10,890.38/x
  3. Step 3: Cross multiply
    19,388.26x = 26,755.70 × 10,890.38
  4. Step 4: Simplify right side
    19,388.26x = 291,379,740.17
  5. Step 5: Solve for x
    x = 291,379,740.17/19,388.26
  6. Step 6: Final answer
    x = 15,028.67

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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.