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Finding the Fourth Proportional to 19,459, 26,857.62 and 12,383.92

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Solution

The fourth proportional to 19,459, 26,857.62 and 12,383.92 is: 17,092.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,459 : 26,857.62 = 12,383.92 : x
  2. Step 2: Convert to fraction form
    19,459/26,857.62 = 12,383.92/x
  3. Step 3: Cross multiply
    19,459x = 26,857.62 × 12,383.92
  4. Step 4: Simplify right side
    19,459x = 332,602,617.47
  5. Step 5: Solve for x
    x = 332,602,617.47/19,459
  6. Step 6: Final answer
    x = 17,092.48

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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.