Home / 11,820.78-16,206.99-11,610.18

Finding the Fourth Proportional to 11,820.78, 16,206.99 and 11,610.18

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Solution

The fourth proportional to 11,820.78, 16,206.99 and 11,610.18 is: 15,918.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,820.78 : 16,206.99 = 11,610.18 : x
  2. Step 2: Convert to fraction form
    11,820.78/16,206.99 = 11,610.18/x
  3. Step 3: Cross multiply
    11,820.78x = 16,206.99 × 11,610.18
  4. Step 4: Simplify right side
    11,820.78x = 188,166,071.16
  5. Step 5: Solve for x
    x = 188,166,071.16/11,820.78
  6. Step 6: Final answer
    x = 15,918.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.