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Finding the Fourth Proportional to 10,602.79, 14,619.89 and 8,682.62

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Solution

The fourth proportional to 10,602.79, 14,619.89 and 8,682.62 is: 11,972.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,602.79 : 14,619.89 = 8,682.62 : x
  2. Step 2: Convert to fraction form
    10,602.79/14,619.89 = 8,682.62/x
  3. Step 3: Cross multiply
    10,602.79x = 14,619.89 × 8,682.62
  4. Step 4: Simplify right side
    10,602.79x = 126,938,876.21
  5. Step 5: Solve for x
    x = 126,938,876.21/10,602.79
  6. Step 6: Final answer
    x = 11,972.22

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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.