Home / 20,339.88-28,068.73-11,387.37

Finding the Fourth Proportional to 20,339.88, 28,068.73 and 11,387.37

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Solution

The fourth proportional to 20,339.88, 28,068.73 and 11,387.37 is: 15,714.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,339.88 : 28,068.73 = 11,387.37 : x
  2. Step 2: Convert to fraction form
    20,339.88/28,068.73 = 11,387.37/x
  3. Step 3: Cross multiply
    20,339.88x = 28,068.73 × 11,387.37
  4. Step 4: Simplify right side
    20,339.88x = 319,629,013.94
  5. Step 5: Solve for x
    x = 319,629,013.94/20,339.88
  6. Step 6: Final answer
    x = 15,714.40

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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.