Home / 28,279.92-39,004.69-19,212.28

Finding the Fourth Proportional to 28,279.92, 39,004.69 and 19,212.28

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Solution

The fourth proportional to 28,279.92, 39,004.69 and 19,212.28 is: 26,498.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,279.92 : 39,004.69 = 19,212.28 : x
  2. Step 2: Convert to fraction form
    28,279.92/39,004.69 = 19,212.28/x
  3. Step 3: Cross multiply
    28,279.92x = 39,004.69 × 19,212.28
  4. Step 4: Simplify right side
    28,279.92x = 749,369,108.05
  5. Step 5: Solve for x
    x = 749,369,108.05/28,279.92
  6. Step 6: Final answer
    x = 26,498.27

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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.