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Finding the Fourth Proportional to 36,903.64, 50,927.14 and 20,989.20

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Solution

The fourth proportional to 36,903.64, 50,927.14 and 20,989.20 is: 28,965.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,903.64 : 50,927.14 = 20,989.20 : x
  2. Step 2: Convert to fraction form
    36,903.64/50,927.14 = 20,989.20/x
  3. Step 3: Cross multiply
    36,903.64x = 50,927.14 × 20,989.20
  4. Step 4: Simplify right side
    36,903.64x = 1,068,919,926.89
  5. Step 5: Solve for x
    x = 1,068,919,926.89/36,903.64
  6. Step 6: Final answer
    x = 28,965.16

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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.