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Finding the Fourth Proportional to 19,371.90, 26,742.09 and 14,894.09

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Solution

The fourth proportional to 19,371.90, 26,742.09 and 14,894.09 is: 20,560.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,371.90 : 26,742.09 = 14,894.09 : x
  2. Step 2: Convert to fraction form
    19,371.90/26,742.09 = 14,894.09/x
  3. Step 3: Cross multiply
    19,371.90x = 26,742.09 × 14,894.09
  4. Step 4: Simplify right side
    19,371.90x = 398,299,095.25
  5. Step 5: Solve for x
    x = 398,299,095.25/19,371.90
  6. Step 6: Final answer
    x = 20,560.66

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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.