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Finding the Fourth Proportional to 36,465.20, 54,697.80 and 20,913.20

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Solution

The fourth proportional to 36,465.20, 54,697.80 and 20,913.20 is: 31,369.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,465.20 : 54,697.80 = 20,913.20 : x
  2. Step 2: Convert to fraction form
    36,465.20/54,697.80 = 20,913.20/x
  3. Step 3: Cross multiply
    36,465.20x = 54,697.80 × 20,913.20
  4. Step 4: Simplify right side
    36,465.20x = 1,143,906,030.96
  5. Step 5: Solve for x
    x = 1,143,906,030.96/36,465.20
  6. Step 6: Final answer
    x = 31,369.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.