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Finding the Fourth Proportional to 36,818.19, 50,809.20 and 20,905.13

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Solution

The fourth proportional to 36,818.19, 50,809.20 and 20,905.13 is: 28,849.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,818.19 : 50,809.20 = 20,905.13 : x
  2. Step 2: Convert to fraction form
    36,818.19/50,809.20 = 20,905.13/x
  3. Step 3: Cross multiply
    36,818.19x = 50,809.20 × 20,905.13
  4. Step 4: Simplify right side
    36,818.19x = 1,062,172,931.20
  5. Step 5: Solve for x
    x = 1,062,172,931.20/36,818.19
  6. Step 6: Final answer
    x = 28,849.13

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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.