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Finding the Fourth Proportional to 36,421, 50,260.84 and 20,288.50

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Solution

The fourth proportional to 36,421, 50,260.84 and 20,288.50 is: 27,998.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,421 : 50,260.84 = 20,288.50 : x
  2. Step 2: Convert to fraction form
    36,421/50,260.84 = 20,288.50/x
  3. Step 3: Cross multiply
    36,421x = 50,260.84 × 20,288.50
  4. Step 4: Simplify right side
    36,421x = 1,019,717,052.34
  5. Step 5: Solve for x
    x = 1,019,717,052.34/36,421
  6. Step 6: Final answer
    x = 27,998.05

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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.