Home / 18,520.60-25,557.42-10,135.48

Finding the Fourth Proportional to 18,520.60, 25,557.42 and 10,135.48

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Solution

The fourth proportional to 18,520.60, 25,557.42 and 10,135.48 is: 13,986.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.60 : 25,557.42 = 10,135.48 : x
  2. Step 2: Convert to fraction form
    18,520.60/25,557.42 = 10,135.48/x
  3. Step 3: Cross multiply
    18,520.60x = 25,557.42 × 10,135.48
  4. Step 4: Simplify right side
    18,520.60x = 259,036,719.26
  5. Step 5: Solve for x
    x = 259,036,719.26/18,520.60
  6. Step 6: Final answer
    x = 13,986.41

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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.