Home / 13,889.20-19,162.33-7,916.56

Finding the Fourth Proportional to 13,889.20, 19,162.33 and 7,916.56

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Solution

The fourth proportional to 13,889.20, 19,162.33 and 7,916.56 is: 10,922.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.20 : 19,162.33 = 7,916.56 : x
  2. Step 2: Convert to fraction form
    13,889.20/19,162.33 = 7,916.56/x
  3. Step 3: Cross multiply
    13,889.20x = 19,162.33 × 7,916.56
  4. Step 4: Simplify right side
    13,889.20x = 151,699,735.18
  5. Step 5: Solve for x
    x = 151,699,735.18/13,889.20
  6. Step 6: Final answer
    x = 10,922.14

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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.