Home / 12,901.54-19,355.05-4,142.61

Finding the Fourth Proportional to 12,901.54, 19,355.05 and 4,142.61

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Solution

The fourth proportional to 12,901.54, 19,355.05 and 4,142.61 is: 6,214.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,901.54 : 19,355.05 = 4,142.61 : x
  2. Step 2: Convert to fraction form
    12,901.54/19,355.05 = 4,142.61/x
  3. Step 3: Cross multiply
    12,901.54x = 19,355.05 × 4,142.61
  4. Step 4: Simplify right side
    12,901.54x = 80,180,423.68
  5. Step 5: Solve for x
    x = 80,180,423.68/12,901.54
  6. Step 6: Final answer
    x = 6,214.79

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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.