Home / 18,505.31-25,536.80-10,121.63

Finding the Fourth Proportional to 18,505.31, 25,536.80 and 10,121.63

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Solution

The fourth proportional to 18,505.31, 25,536.80 and 10,121.63 is: 13,967.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,505.31 : 25,536.80 = 10,121.63 : x
  2. Step 2: Convert to fraction form
    18,505.31/25,536.80 = 10,121.63/x
  3. Step 3: Cross multiply
    18,505.31x = 25,536.80 × 10,121.63
  4. Step 4: Simplify right side
    18,505.31x = 258,474,040.98
  5. Step 5: Solve for x
    x = 258,474,040.98/18,505.31
  6. Step 6: Final answer
    x = 13,967.56

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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.