Home / 13,923.12-20,894.72-5,490.88

Finding the Fourth Proportional to 13,923.12, 20,894.72 and 5,490.88

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Solution

The fourth proportional to 13,923.12, 20,894.72 and 5,490.88 is: 8,240.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,923.12 : 20,894.72 = 5,490.88 : x
  2. Step 2: Convert to fraction form
    13,923.12/20,894.72 = 5,490.88/x
  3. Step 3: Cross multiply
    13,923.12x = 20,894.72 × 5,490.88
  4. Step 4: Simplify right side
    13,923.12x = 114,730,400.15
  5. Step 5: Solve for x
    x = 114,730,400.15/13,923.12
  6. Step 6: Final answer
    x = 8,240.28

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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.