Home / 13,509.37-20,263.30-3,647.90

Finding the Fourth Proportional to 13,509.37, 20,263.30 and 3,647.90

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Solution

The fourth proportional to 13,509.37, 20,263.30 and 3,647.90 is: 5,471.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,509.37 : 20,263.30 = 3,647.90 : x
  2. Step 2: Convert to fraction form
    13,509.37/20,263.30 = 3,647.90/x
  3. Step 3: Cross multiply
    13,509.37x = 20,263.30 × 3,647.90
  4. Step 4: Simplify right side
    13,509.37x = 73,918,492.07
  5. Step 5: Solve for x
    x = 73,918,492.07/13,509.37
  6. Step 6: Final answer
    x = 5,471.65

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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.