Home / 28,279.30-38,999.37-19,218.19

Finding the Fourth Proportional to 28,279.30, 38,999.37 and 19,218.19

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Solution

The fourth proportional to 28,279.30, 38,999.37 and 19,218.19 is: 26,503.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,279.30 : 38,999.37 = 19,218.19 : x
  2. Step 2: Convert to fraction form
    28,279.30/38,999.37 = 19,218.19/x
  3. Step 3: Cross multiply
    28,279.30x = 38,999.37 × 19,218.19
  4. Step 4: Simplify right side
    28,279.30x = 749,497,078.39
  5. Step 5: Solve for x
    x = 749,497,078.39/28,279.30
  6. Step 6: Final answer
    x = 26,503.38

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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.