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Finding the Fourth Proportional to 8,701.60, 13,124.44 and 8,125.60

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Solution

The fourth proportional to 8,701.60, 13,124.44 and 8,125.60 is: 12,255.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,701.60 : 13,124.44 = 8,125.60 : x
  2. Step 2: Convert to fraction form
    8,701.60/13,124.44 = 8,125.60/x
  3. Step 3: Cross multiply
    8,701.60x = 13,124.44 × 8,125.60
  4. Step 4: Simplify right side
    8,701.60x = 106,643,949.66
  5. Step 5: Solve for x
    x = 106,643,949.66/8,701.60
  6. Step 6: Final answer
    x = 12,255.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.