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Finding the Fourth Proportional to 12,488.77, 17,236.92 and 8,018.17

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Solution

The fourth proportional to 12,488.77, 17,236.92 and 8,018.17 is: 11,066.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,488.77 : 17,236.92 = 8,018.17 : x
  2. Step 2: Convert to fraction form
    12,488.77/17,236.92 = 8,018.17/x
  3. Step 3: Cross multiply
    12,488.77x = 17,236.92 × 8,018.17
  4. Step 4: Simplify right side
    12,488.77x = 138,208,554.84
  5. Step 5: Solve for x
    x = 138,208,554.84/12,488.77
  6. Step 6: Final answer
    x = 11,066.63

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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.