Home / 10,769.12-14,869.68-8,682.56

Finding the Fourth Proportional to 10,769.12, 14,869.68 and 8,682.56

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Solution

The fourth proportional to 10,769.12, 14,869.68 and 8,682.56 is: 11,988.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,769.12 : 14,869.68 = 8,682.56 : x
  2. Step 2: Convert to fraction form
    10,769.12/14,869.68 = 8,682.56/x
  3. Step 3: Cross multiply
    10,769.12x = 14,869.68 × 8,682.56
  4. Step 4: Simplify right side
    10,769.12x = 129,106,888.78
  5. Step 5: Solve for x
    x = 129,106,888.78/10,769.12
  6. Step 6: Final answer
    x = 11,988.62

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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.