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Finding the Fourth Proportional to 12,693.40, 19,045.54 and 4,907.68

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Solution

The fourth proportional to 12,693.40, 19,045.54 and 4,907.68 is: 7,363.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,693.40 : 19,045.54 = 4,907.68 : x
  2. Step 2: Convert to fraction form
    12,693.40/19,045.54 = 4,907.68/x
  3. Step 3: Cross multiply
    12,693.40x = 19,045.54 × 4,907.68
  4. Step 4: Simplify right side
    12,693.40x = 93,469,415.75
  5. Step 5: Solve for x
    x = 93,469,415.75/12,693.40
  6. Step 6: Final answer
    x = 7,363.62

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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.