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Finding the Fourth Proportional to 8,986.79, 13,468.03 and 7,039.55

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Solution

The fourth proportional to 8,986.79, 13,468.03 and 7,039.55 is: 10,549.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,986.79 : 13,468.03 = 7,039.55 : x
  2. Step 2: Convert to fraction form
    8,986.79/13,468.03 = 7,039.55/x
  3. Step 3: Cross multiply
    8,986.79x = 13,468.03 × 7,039.55
  4. Step 4: Simplify right side
    8,986.79x = 94,808,785.65
  5. Step 5: Solve for x
    x = 94,808,785.65/8,986.79
  6. Step 6: Final answer
    x = 10,549.80

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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.