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Finding the Fourth Proportional to 12,682.87, 18,984.35 and 8,710.83

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Solution

The fourth proportional to 12,682.87, 18,984.35 and 8,710.83 is: 13,038.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,682.87 : 18,984.35 = 8,710.83 : x
  2. Step 2: Convert to fraction form
    12,682.87/18,984.35 = 8,710.83/x
  3. Step 3: Cross multiply
    12,682.87x = 18,984.35 × 8,710.83
  4. Step 4: Simplify right side
    12,682.87x = 165,369,445.51
  5. Step 5: Solve for x
    x = 165,369,445.51/12,682.87
  6. Step 6: Final answer
    x = 13,038.80

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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.