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Finding the Fourth Proportional to 8,957.91, 13,435.11 and 8,513.39

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Solution

The fourth proportional to 8,957.91, 13,435.11 and 8,513.39 is: 12,768.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,957.91 : 13,435.11 = 8,513.39 : x
  2. Step 2: Convert to fraction form
    8,957.91/13,435.11 = 8,513.39/x
  3. Step 3: Cross multiply
    8,957.91x = 13,435.11 × 8,513.39
  4. Step 4: Simplify right side
    8,957.91x = 114,378,263.95
  5. Step 5: Solve for x
    x = 114,378,263.95/8,957.91
  6. Step 6: Final answer
    x = 12,768.41

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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.