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Finding the Fourth Proportional to 36,875.88, 50,890.02 and 20,961

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Solution

The fourth proportional to 36,875.88, 50,890.02 and 20,961 is: 28,926.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,875.88 : 50,890.02 = 20,961 : x
  2. Step 2: Convert to fraction form
    36,875.88/50,890.02 = 20,961/x
  3. Step 3: Cross multiply
    36,875.88x = 50,890.02 × 20,961
  4. Step 4: Simplify right side
    36,875.88x = 1,066,705,709.22
  5. Step 5: Solve for x
    x = 1,066,705,709.22/36,875.88
  6. Step 6: Final answer
    x = 28,926.92

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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.