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Finding the Fourth Proportional to 36,000.90, 53,928.45 and 20,400.30

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Solution

The fourth proportional to 36,000.90, 53,928.45 and 20,400.30 is: 30,559.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,000.90 : 53,928.45 = 20,400.30 : x
  2. Step 2: Convert to fraction form
    36,000.90/53,928.45 = 20,400.30/x
  3. Step 3: Cross multiply
    36,000.90x = 53,928.45 × 20,400.30
  4. Step 4: Simplify right side
    36,000.90x = 1,100,156,558.54
  5. Step 5: Solve for x
    x = 1,100,156,558.54/36,000.90
  6. Step 6: Final answer
    x = 30,559.14

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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.