Home / 13,333.66-20,000.24-3,980.02

Finding the Fourth Proportional to 13,333.66, 20,000.24 and 3,980.02

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Solution

The fourth proportional to 13,333.66, 20,000.24 and 3,980.02 is: 5,969.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,333.66 : 20,000.24 = 3,980.02 : x
  2. Step 2: Convert to fraction form
    13,333.66/20,000.24 = 3,980.02/x
  3. Step 3: Cross multiply
    13,333.66x = 20,000.24 × 3,980.02
  4. Step 4: Simplify right side
    13,333.66x = 79,601,335.30
  5. Step 5: Solve for x
    x = 79,601,335.30/13,333.66
  6. Step 6: Final answer
    x = 5,969.96

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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.