Home / 13,253.20-19,880.68-4,485.12

Finding the Fourth Proportional to 13,253.20, 19,880.68 and 4,485.12

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Solution

The fourth proportional to 13,253.20, 19,880.68 and 4,485.12 is: 6,727.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,253.20 : 19,880.68 = 4,485.12 : x
  2. Step 2: Convert to fraction form
    13,253.20/19,880.68 = 4,485.12/x
  3. Step 3: Cross multiply
    13,253.20x = 19,880.68 × 4,485.12
  4. Step 4: Simplify right side
    13,253.20x = 89,167,235.48
  5. Step 5: Solve for x
    x = 89,167,235.48/13,253.20
  6. Step 6: Final answer
    x = 6,727.98

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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.