Home / 13,563.54-20,343.20-5,247.40

Finding the Fourth Proportional to 13,563.54, 20,343.20 and 5,247.40

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Solution

The fourth proportional to 13,563.54, 20,343.20 and 5,247.40 is: 7,870.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,563.54 : 20,343.20 = 5,247.40 : x
  2. Step 2: Convert to fraction form
    13,563.54/20,343.20 = 5,247.40/x
  3. Step 3: Cross multiply
    13,563.54x = 20,343.20 × 5,247.40
  4. Step 4: Simplify right side
    13,563.54x = 106,748,907.68
  5. Step 5: Solve for x
    x = 106,748,907.68/13,563.54
  6. Step 6: Final answer
    x = 7,870.28

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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.