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Finding the Fourth Proportional to 13,012.65, 17,953.09 and 8,473.28

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Solution

The fourth proportional to 13,012.65, 17,953.09 and 8,473.28 is: 11,690.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,012.65 : 17,953.09 = 8,473.28 : x
  2. Step 2: Convert to fraction form
    13,012.65/17,953.09 = 8,473.28/x
  3. Step 3: Cross multiply
    13,012.65x = 17,953.09 × 8,473.28
  4. Step 4: Simplify right side
    13,012.65x = 152,121,447.49
  5. Step 5: Solve for x
    x = 152,121,447.49/13,012.65
  6. Step 6: Final answer
    x = 11,690.27

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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.