Home / 13,995.04-20,995.32-3,999.87

Finding the Fourth Proportional to 13,995.04, 20,995.32 and 3,999.87

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Solution

The fourth proportional to 13,995.04, 20,995.32 and 3,999.87 is: 6,000.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,995.04 : 20,995.32 = 3,999.87 : x
  2. Step 2: Convert to fraction form
    13,995.04/20,995.32 = 3,999.87/x
  3. Step 3: Cross multiply
    13,995.04x = 20,995.32 × 3,999.87
  4. Step 4: Simplify right side
    13,995.04x = 83,978,550.61
  5. Step 5: Solve for x
    x = 83,978,550.61/13,995.04
  6. Step 6: Final answer
    x = 6,000.59

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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.