Home / 28,590.45-39,456.40-15,843.37

Finding the Fourth Proportional to 28,590.45, 39,456.40 and 15,843.37

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Solution

The fourth proportional to 28,590.45, 39,456.40 and 15,843.37 is: 21,864.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,590.45 : 39,456.40 = 15,843.37 : x
  2. Step 2: Convert to fraction form
    28,590.45/39,456.40 = 15,843.37/x
  3. Step 3: Cross multiply
    28,590.45x = 39,456.40 × 15,843.37
  4. Step 4: Simplify right side
    28,590.45x = 625,122,320.86
  5. Step 5: Solve for x
    x = 625,122,320.86/28,590.45
  6. Step 6: Final answer
    x = 21,864.72

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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.