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Finding the Fourth Proportional to 36,903.25, 50,926.21 and 20,987.68

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Solution

The fourth proportional to 36,903.25, 50,926.21 and 20,987.68 is: 28,962.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,903.25 : 50,926.21 = 20,987.68 : x
  2. Step 2: Convert to fraction form
    36,903.25/50,926.21 = 20,987.68/x
  3. Step 3: Cross multiply
    36,903.25x = 50,926.21 × 20,987.68
  4. Step 4: Simplify right side
    36,903.25x = 1,068,822,999.09
  5. Step 5: Solve for x
    x = 1,068,822,999.09/36,903.25
  6. Step 6: Final answer
    x = 28,962.84

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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.