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Finding the Fourth Proportional to 10,864.59, 14,992.07 and 6,389.44

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Solution

The fourth proportional to 10,864.59, 14,992.07 and 6,389.44 is: 8,816.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,864.59 : 14,992.07 = 6,389.44 : x
  2. Step 2: Convert to fraction form
    10,864.59/14,992.07 = 6,389.44/x
  3. Step 3: Cross multiply
    10,864.59x = 14,992.07 × 6,389.44
  4. Step 4: Simplify right side
    10,864.59x = 95,790,982.58
  5. Step 5: Solve for x
    x = 95,790,982.58/10,864.59
  6. Step 6: Final answer
    x = 8,816.80

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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.