Home / 18,513.26-25,548.17-10,129.76

Finding the Fourth Proportional to 18,513.26, 25,548.17 and 10,129.76

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Solution

The fourth proportional to 18,513.26, 25,548.17 and 10,129.76 is: 13,978.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,513.26 : 25,548.17 = 10,129.76 : x
  2. Step 2: Convert to fraction form
    18,513.26/25,548.17 = 10,129.76/x
  3. Step 3: Cross multiply
    18,513.26x = 25,548.17 × 10,129.76
  4. Step 4: Simplify right side
    18,513.26x = 258,796,652.15
  5. Step 5: Solve for x
    x = 258,796,652.15/18,513.26
  6. Step 6: Final answer
    x = 13,978.99

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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.