Home / 28,996.60-40,021.14-18,926.68

Finding the Fourth Proportional to 28,996.60, 40,021.14 and 18,926.68

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Solution

The fourth proportional to 28,996.60, 40,021.14 and 18,926.68 is: 26,122.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,996.60 : 40,021.14 = 18,926.68 : x
  2. Step 2: Convert to fraction form
    28,996.60/40,021.14 = 18,926.68/x
  3. Step 3: Cross multiply
    28,996.60x = 40,021.14 × 18,926.68
  4. Step 4: Simplify right side
    28,996.60x = 757,467,310.02
  5. Step 5: Solve for x
    x = 757,467,310.02/28,996.60
  6. Step 6: Final answer
    x = 26,122.63

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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.