Home / 18,947.34-26,147.54-10,449.78

Finding the Fourth Proportional to 18,947.34, 26,147.54 and 10,449.78

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Solution

The fourth proportional to 18,947.34, 26,147.54 and 10,449.78 is: 14,420.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947.34 : 26,147.54 = 10,449.78 : x
  2. Step 2: Convert to fraction form
    18,947.34/26,147.54 = 10,449.78/x
  3. Step 3: Cross multiply
    18,947.34x = 26,147.54 × 10,449.78
  4. Step 4: Simplify right side
    18,947.34x = 273,236,040.54
  5. Step 5: Solve for x
    x = 273,236,040.54/18,947.34
  6. Step 6: Final answer
    x = 14,420.81

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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.