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Finding the Fourth Proportional to 12,951, 19,426.92 and 3,591.12

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Solution

The fourth proportional to 12,951, 19,426.92 and 3,591.12 is: 5,386.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,951 : 19,426.92 = 3,591.12 : x
  2. Step 2: Convert to fraction form
    12,951/19,426.92 = 3,591.12/x
  3. Step 3: Cross multiply
    12,951x = 19,426.92 × 3,591.12
  4. Step 4: Simplify right side
    12,951x = 69,764,400.95
  5. Step 5: Solve for x
    x = 69,764,400.95/12,951
  6. Step 6: Final answer
    x = 5,386.80

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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.