Home / 28,890.98-43,343.76-13,319.54

Finding the Fourth Proportional to 28,890.98, 43,343.76 and 13,319.54

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Solution

The fourth proportional to 28,890.98, 43,343.76 and 13,319.54 is: 19,982.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,890.98 : 43,343.76 = 13,319.54 : x
  2. Step 2: Convert to fraction form
    28,890.98/43,343.76 = 13,319.54/x
  3. Step 3: Cross multiply
    28,890.98x = 43,343.76 × 13,319.54
  4. Step 4: Simplify right side
    28,890.98x = 577,318,945.07
  5. Step 5: Solve for x
    x = 577,318,945.07/28,890.98
  6. Step 6: Final answer
    x = 19,982.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.