Home / 28,336.70-39,105.69-15,590.44

Finding the Fourth Proportional to 28,336.70, 39,105.69 and 15,590.44

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Solution

The fourth proportional to 28,336.70, 39,105.69 and 15,590.44 is: 21,515.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,336.70 : 39,105.69 = 15,590.44 : x
  2. Step 2: Convert to fraction form
    28,336.70/39,105.69 = 15,590.44/x
  3. Step 3: Cross multiply
    28,336.70x = 39,105.69 × 15,590.44
  4. Step 4: Simplify right side
    28,336.70x = 609,674,874.30
  5. Step 5: Solve for x
    x = 609,674,874.30/28,336.70
  6. Step 6: Final answer
    x = 21,515.38

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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.