Home / 13,513.64-20,276.53-8,581.95

Finding the Fourth Proportional to 13,513.64, 20,276.53 and 8,581.95

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Solution

The fourth proportional to 13,513.64, 20,276.53 and 8,581.95 is: 12,876.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,513.64 : 20,276.53 = 8,581.95 : x
  2. Step 2: Convert to fraction form
    13,513.64/20,276.53 = 8,581.95/x
  3. Step 3: Cross multiply
    13,513.64x = 20,276.53 × 8,581.95
  4. Step 4: Simplify right side
    13,513.64x = 174,012,145.18
  5. Step 5: Solve for x
    x = 174,012,145.18/13,513.64
  6. Step 6: Final answer
    x = 12,876.78

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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.