Home / 18,511.57-25,547.43-11,800.18

Finding the Fourth Proportional to 18,511.57, 25,547.43 and 11,800.18

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Solution

The fourth proportional to 18,511.57, 25,547.43 and 11,800.18 is: 16,285.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,511.57 : 25,547.43 = 11,800.18 : x
  2. Step 2: Convert to fraction form
    18,511.57/25,547.43 = 11,800.18/x
  3. Step 3: Cross multiply
    18,511.57x = 25,547.43 × 11,800.18
  4. Step 4: Simplify right side
    18,511.57x = 301,464,272.54
  5. Step 5: Solve for x
    x = 301,464,272.54/18,511.57
  6. Step 6: Final answer
    x = 16,285.18

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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.