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Finding the Fourth Proportional to 17,663.64, 26,472.01 and 12,961.65

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Solution

The fourth proportional to 17,663.64, 26,472.01 and 12,961.65 is: 19,425.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,663.64 : 26,472.01 = 12,961.65 : x
  2. Step 2: Convert to fraction form
    17,663.64/26,472.01 = 12,961.65/x
  3. Step 3: Cross multiply
    17,663.64x = 26,472.01 × 12,961.65
  4. Step 4: Simplify right side
    17,663.64x = 343,120,928.42
  5. Step 5: Solve for x
    x = 343,120,928.42/17,663.64
  6. Step 6: Final answer
    x = 19,425.27

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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.