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Finding the Fourth Proportional to 19,215.76, 26,517.76 and 10,383.76

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Solution

The fourth proportional to 19,215.76, 26,517.76 and 10,383.76 is: 14,329.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,215.76 : 26,517.76 = 10,383.76 : x
  2. Step 2: Convert to fraction form
    19,215.76/26,517.76 = 10,383.76/x
  3. Step 3: Cross multiply
    19,215.76x = 26,517.76 × 10,383.76
  4. Step 4: Simplify right side
    19,215.76x = 275,354,055.58
  5. Step 5: Solve for x
    x = 275,354,055.58/19,215.76
  6. Step 6: Final answer
    x = 14,329.59

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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.