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Finding the Fourth Proportional to 8,985.88, 13,458.04 and 8,674.48

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Solution

The fourth proportional to 8,985.88, 13,458.04 and 8,674.48 is: 12,991.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.88 : 13,458.04 = 8,674.48 : x
  2. Step 2: Convert to fraction form
    8,985.88/13,458.04 = 8,674.48/x
  3. Step 3: Cross multiply
    8,985.88x = 13,458.04 × 8,674.48
  4. Step 4: Simplify right side
    8,985.88x = 116,741,498.82
  5. Step 5: Solve for x
    x = 116,741,498.82/8,985.88
  6. Step 6: Final answer
    x = 12,991.66

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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.