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Finding the Fourth Proportional to 8,986.64, 13,459.02 and 8,675.18

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Solution

The fourth proportional to 8,986.64, 13,459.02 and 8,675.18 is: 12,992.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,986.64 : 13,459.02 = 8,675.18 : x
  2. Step 2: Convert to fraction form
    8,986.64/13,459.02 = 8,675.18/x
  3. Step 3: Cross multiply
    8,986.64x = 13,459.02 × 8,675.18
  4. Step 4: Simplify right side
    8,986.64x = 116,759,421.12
  5. Step 5: Solve for x
    x = 116,759,421.12/8,986.64
  6. Step 6: Final answer
    x = 12,992.56

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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.