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Finding the Fourth Proportional to 17,765.84, 26,666.04 and 8,538.32

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Solution

The fourth proportional to 17,765.84, 26,666.04 and 8,538.32 is: 12,815.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,765.84 : 26,666.04 = 8,538.32 : x
  2. Step 2: Convert to fraction form
    17,765.84/26,666.04 = 8,538.32/x
  3. Step 3: Cross multiply
    17,765.84x = 26,666.04 × 8,538.32
  4. Step 4: Simplify right side
    17,765.84x = 227,683,182.65
  5. Step 5: Solve for x
    x = 227,683,182.65/17,765.84
  6. Step 6: Final answer
    x = 12,815.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.