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Finding the Fourth Proportional to 8,948.13, 13,401.43 and 8,636.75

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Solution

The fourth proportional to 8,948.13, 13,401.43 and 8,636.75 is: 12,935.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,948.13 : 13,401.43 = 8,636.75 : x
  2. Step 2: Convert to fraction form
    8,948.13/13,401.43 = 8,636.75/x
  3. Step 3: Cross multiply
    8,948.13x = 13,401.43 × 8,636.75
  4. Step 4: Simplify right side
    8,948.13x = 115,744,800.55
  5. Step 5: Solve for x
    x = 115,744,800.55/8,948.13
  6. Step 6: Final answer
    x = 12,935.08

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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.