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Finding the Fourth Proportional to 8,804.36, 13,128.94 and 8,725.40

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Solution

The fourth proportional to 8,804.36, 13,128.94 and 8,725.40 is: 13,011.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,804.36 : 13,128.94 = 8,725.40 : x
  2. Step 2: Convert to fraction form
    8,804.36/13,128.94 = 8,725.40/x
  3. Step 3: Cross multiply
    8,804.36x = 13,128.94 × 8,725.40
  4. Step 4: Simplify right side
    8,804.36x = 114,555,253.08
  5. Step 5: Solve for x
    x = 114,555,253.08/8,804.36
  6. Step 6: Final answer
    x = 13,011.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.