Home / 11,820.16-17,729.28-3,055.36

Finding the Fourth Proportional to 11,820.16, 17,729.28 and 3,055.36

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Solution

The fourth proportional to 11,820.16, 17,729.28 and 3,055.36 is: 4,582.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,820.16 : 17,729.28 = 3,055.36 : x
  2. Step 2: Convert to fraction form
    11,820.16/17,729.28 = 3,055.36/x
  3. Step 3: Cross multiply
    11,820.16x = 17,729.28 × 3,055.36
  4. Step 4: Simplify right side
    11,820.16x = 54,169,332.94
  5. Step 5: Solve for x
    x = 54,169,332.94/11,820.16
  6. Step 6: Final answer
    x = 4,582.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.