Home / 13,324.78-18,390.60-7,947.56

Finding the Fourth Proportional to 13,324.78, 18,390.60 and 7,947.56

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Solution

The fourth proportional to 13,324.78, 18,390.60 and 7,947.56 is: 10,969.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,324.78 : 18,390.60 = 7,947.56 : x
  2. Step 2: Convert to fraction form
    13,324.78/18,390.60 = 7,947.56/x
  3. Step 3: Cross multiply
    13,324.78x = 18,390.60 × 7,947.56
  4. Step 4: Simplify right side
    13,324.78x = 146,160,442.91
  5. Step 5: Solve for x
    x = 146,160,442.91/13,324.78
  6. Step 6: Final answer
    x = 10,969.07

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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.