Home / 19,820.12-27,351.54-11,436.44

Finding the Fourth Proportional to 19,820.12, 27,351.54 and 11,436.44

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Solution

The fourth proportional to 19,820.12, 27,351.54 and 11,436.44 is: 15,782.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,820.12 : 27,351.54 = 11,436.44 : x
  2. Step 2: Convert to fraction form
    19,820.12/27,351.54 = 11,436.44/x
  3. Step 3: Cross multiply
    19,820.12x = 27,351.54 × 11,436.44
  4. Step 4: Simplify right side
    19,820.12x = 312,804,246.12
  5. Step 5: Solve for x
    x = 312,804,246.12/19,820.12
  6. Step 6: Final answer
    x = 15,782.16

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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.