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Finding the Fourth Proportional to 12,691.96, 19,037.93 and 3,457.96

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Solution

The fourth proportional to 12,691.96, 19,037.93 and 3,457.96 is: 5,186.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,691.96 : 19,037.93 = 3,457.96 : x
  2. Step 2: Convert to fraction form
    12,691.96/19,037.93 = 3,457.96/x
  3. Step 3: Cross multiply
    12,691.96x = 19,037.93 × 3,457.96
  4. Step 4: Simplify right side
    12,691.96x = 65,832,305.23
  5. Step 5: Solve for x
    x = 65,832,305.23/12,691.96
  6. Step 6: Final answer
    x = 5,186.93

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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.