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Finding the Fourth Proportional to 12,679.58, 17,495.70 and 7,374.62

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Solution

The fourth proportional to 12,679.58, 17,495.70 and 7,374.62 is: 10,175.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,679.58 : 17,495.70 = 7,374.62 : x
  2. Step 2: Convert to fraction form
    12,679.58/17,495.70 = 7,374.62/x
  3. Step 3: Cross multiply
    12,679.58x = 17,495.70 × 7,374.62
  4. Step 4: Simplify right side
    12,679.58x = 129,024,139.13
  5. Step 5: Solve for x
    x = 129,024,139.13/12,679.58
  6. Step 6: Final answer
    x = 10,175.74

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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.