Home / 13,541.58-18,687.42-7,879.68

Finding the Fourth Proportional to 13,541.58, 18,687.42 and 7,879.68

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Solution

The fourth proportional to 13,541.58, 18,687.42 and 7,879.68 is: 10,873.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,541.58 : 18,687.42 = 7,879.68 : x
  2. Step 2: Convert to fraction form
    13,541.58/18,687.42 = 7,879.68/x
  3. Step 3: Cross multiply
    13,541.58x = 18,687.42 × 7,879.68
  4. Step 4: Simplify right side
    13,541.58x = 147,250,889.63
  5. Step 5: Solve for x
    x = 147,250,889.63/13,541.58
  6. Step 6: Final answer
    x = 10,873.98

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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.