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Finding the Fourth Proportional to 12,892.94, 19,342.65 and 3,658.94

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Solution

The fourth proportional to 12,892.94, 19,342.65 and 3,658.94 is: 5,489.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,892.94 : 19,342.65 = 3,658.94 : x
  2. Step 2: Convert to fraction form
    12,892.94/19,342.65 = 3,658.94/x
  3. Step 3: Cross multiply
    12,892.94x = 19,342.65 × 3,658.94
  4. Step 4: Simplify right side
    12,892.94x = 70,773,595.79
  5. Step 5: Solve for x
    x = 70,773,595.79/12,892.94
  6. Step 6: Final answer
    x = 5,489.33

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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.