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Finding the Fourth Proportional to 8,914.40, 13,371.60 and 8,404.10

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Solution

The fourth proportional to 8,914.40, 13,371.60 and 8,404.10 is: 12,606.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,914.40 : 13,371.60 = 8,404.10 : x
  2. Step 2: Convert to fraction form
    8,914.40/13,371.60 = 8,404.10/x
  3. Step 3: Cross multiply
    8,914.40x = 13,371.60 × 8,404.10
  4. Step 4: Simplify right side
    8,914.40x = 112,376,263.56
  5. Step 5: Solve for x
    x = 112,376,263.56/8,914.40
  6. Step 6: Final answer
    x = 12,606.15

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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.