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Finding the Fourth Proportional to 8,866.40, 13,291.36 and 7,029.32

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Solution

The fourth proportional to 8,866.40, 13,291.36 and 7,029.32 is: 10,537.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,866.40 : 13,291.36 = 7,029.32 : x
  2. Step 2: Convert to fraction form
    8,866.40/13,291.36 = 7,029.32/x
  3. Step 3: Cross multiply
    8,866.40x = 13,291.36 × 7,029.32
  4. Step 4: Simplify right side
    8,866.40x = 93,429,138.65
  5. Step 5: Solve for x
    x = 93,429,138.65/8,866.40
  6. Step 6: Final answer
    x = 10,537.44

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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.