Home / 18,947.10-26,147.19-10,449.54

Finding the Fourth Proportional to 18,947.10, 26,147.19 and 10,449.54

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Solution

The fourth proportional to 18,947.10, 26,147.19 and 10,449.54 is: 14,420.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947.10 : 26,147.19 = 10,449.54 : x
  2. Step 2: Convert to fraction form
    18,947.10/26,147.19 = 10,449.54/x
  3. Step 3: Cross multiply
    18,947.10x = 26,147.19 × 10,449.54
  4. Step 4: Simplify right side
    18,947.10x = 273,226,107.79
  5. Step 5: Solve for x
    x = 273,226,107.79/18,947.10
  6. Step 6: Final answer
    x = 14,420.47

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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.