Home / 18,511.31-25,539.50-10,960.16

Finding the Fourth Proportional to 18,511.31, 25,539.50 and 10,960.16

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Solution

The fourth proportional to 18,511.31, 25,539.50 and 10,960.16 is: 15,121.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,511.31 : 25,539.50 = 10,960.16 : x
  2. Step 2: Convert to fraction form
    18,511.31/25,539.50 = 10,960.16/x
  3. Step 3: Cross multiply
    18,511.31x = 25,539.50 × 10,960.16
  4. Step 4: Simplify right side
    18,511.31x = 279,916,906.02
  5. Step 5: Solve for x
    x = 279,916,906.02/18,511.31
  6. Step 6: Final answer
    x = 15,121.40

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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.