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Finding the Fourth Proportional to 8,699.47, 13,103.90 and 8,584.66

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Solution

The fourth proportional to 8,699.47, 13,103.90 and 8,584.66 is: 12,930.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.47 : 13,103.90 = 8,584.66 : x
  2. Step 2: Convert to fraction form
    8,699.47/13,103.90 = 8,584.66/x
  3. Step 3: Cross multiply
    8,699.47x = 13,103.90 × 8,584.66
  4. Step 4: Simplify right side
    8,699.47x = 112,492,526.17
  5. Step 5: Solve for x
    x = 112,492,526.17/8,699.47
  6. Step 6: Final answer
    x = 12,930.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.