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Finding the Fourth Proportional to 12,453.84, 17,186.26 and 6,788.90

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Solution

The fourth proportional to 12,453.84, 17,186.26 and 6,788.90 is: 9,368.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,453.84 : 17,186.26 = 6,788.90 : x
  2. Step 2: Convert to fraction form
    12,453.84/17,186.26 = 6,788.90/x
  3. Step 3: Cross multiply
    12,453.84x = 17,186.26 × 6,788.90
  4. Step 4: Simplify right side
    12,453.84x = 116,675,800.51
  5. Step 5: Solve for x
    x = 116,675,800.51/12,453.84
  6. Step 6: Final answer
    x = 9,368.66

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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.