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Finding the Fourth Proportional to 19,505.62, 26,918.00 and 11,008.21

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Solution

The fourth proportional to 19,505.62, 26,918.00 and 11,008.21 is: 15,191.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,505.62 : 26,918.00 = 11,008.21 : x
  2. Step 2: Convert to fraction form
    19,505.62/26,918.00 = 11,008.21/x
  3. Step 3: Cross multiply
    19,505.62x = 26,918.00 × 11,008.21
  4. Step 4: Simplify right side
    19,505.62x = 296,319,103.82
  5. Step 5: Solve for x
    x = 296,319,103.82/19,505.62
  6. Step 6: Final answer
    x = 15,191.47

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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.