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Finding the Fourth Proportional to 15,766.32, 21,757.68 and 8,693.00

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Solution

The fourth proportional to 15,766.32, 21,757.68 and 8,693.00 is: 11,996.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,766.32 : 21,757.68 = 8,693.00 : x
  2. Step 2: Convert to fraction form
    15,766.32/21,757.68 = 8,693.00/x
  3. Step 3: Cross multiply
    15,766.32x = 21,757.68 × 8,693.00
  4. Step 4: Simplify right side
    15,766.32x = 189,139,457.85
  5. Step 5: Solve for x
    x = 189,139,457.85/15,766.32
  6. Step 6: Final answer
    x = 11,996.42

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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.