Home / 13,561.92-20,349-8,630.28

Finding the Fourth Proportional to 13,561.92, 20,349 and 8,630.28

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Solution

The fourth proportional to 13,561.92, 20,349 and 8,630.28 is: 12,949.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,561.92 : 20,349 = 8,630.28 : x
  2. Step 2: Convert to fraction form
    13,561.92/20,349 = 8,630.28/x
  3. Step 3: Cross multiply
    13,561.92x = 20,349 × 8,630.28
  4. Step 4: Simplify right side
    13,561.92x = 175,617,567.72
  5. Step 5: Solve for x
    x = 175,617,567.72/13,561.92
  6. Step 6: Final answer
    x = 12,949.31

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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.