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Finding the Fourth Proportional to 10,807.63, 14,898.43 and 8,682.39

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Solution

The fourth proportional to 10,807.63, 14,898.43 and 8,682.39 is: 11,968.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,807.63 : 14,898.43 = 8,682.39 : x
  2. Step 2: Convert to fraction form
    10,807.63/14,898.43 = 8,682.39/x
  3. Step 3: Cross multiply
    10,807.63x = 14,898.43 × 8,682.39
  4. Step 4: Simplify right side
    10,807.63x = 129,353,990.50
  5. Step 5: Solve for x
    x = 129,353,990.50/10,807.63
  6. Step 6: Final answer
    x = 11,968.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.