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Finding the Fourth Proportional to 12,763.17, 19,129.77 and 11,305.17

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Solution

The fourth proportional to 12,763.17, 19,129.77 and 11,305.17 is: 16,944.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,763.17 : 19,129.77 = 11,305.17 : x
  2. Step 2: Convert to fraction form
    12,763.17/19,129.77 = 11,305.17/x
  3. Step 3: Cross multiply
    12,763.17x = 19,129.77 × 11,305.17
  4. Step 4: Simplify right side
    12,763.17x = 216,265,301.91
  5. Step 5: Solve for x
    x = 216,265,301.91/12,763.17
  6. Step 6: Final answer
    x = 16,944.48

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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.