Home / 18,486.31-25,511.19-10,102.81

Finding the Fourth Proportional to 18,486.31, 25,511.19 and 10,102.81

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Solution

The fourth proportional to 18,486.31, 25,511.19 and 10,102.81 is: 13,941.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,486.31 : 25,511.19 = 10,102.81 : x
  2. Step 2: Convert to fraction form
    18,486.31/25,511.19 = 10,102.81/x
  3. Step 3: Cross multiply
    18,486.31x = 25,511.19 × 10,102.81
  4. Step 4: Simplify right side
    18,486.31x = 257,734,705.44
  5. Step 5: Solve for x
    x = 257,734,705.44/18,486.31
  6. Step 6: Final answer
    x = 13,941.92

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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.