Home / 13,840.32-20,747.69-5,518.31

Finding the Fourth Proportional to 13,840.32, 20,747.69 and 5,518.31

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Solution

The fourth proportional to 13,840.32, 20,747.69 and 5,518.31 is: 8,272.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,840.32 : 20,747.69 = 5,518.31 : x
  2. Step 2: Convert to fraction form
    13,840.32/20,747.69 = 5,518.31/x
  3. Step 3: Cross multiply
    13,840.32x = 20,747.69 × 5,518.31
  4. Step 4: Simplify right side
    13,840.32x = 114,492,230.18
  5. Step 5: Solve for x
    x = 114,492,230.18/13,840.32
  6. Step 6: Final answer
    x = 8,272.37

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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.