Home / 13,940.12-19,230.90-8,901.78

Finding the Fourth Proportional to 13,940.12, 19,230.90 and 8,901.78

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Solution

The fourth proportional to 13,940.12, 19,230.90 and 8,901.78 is: 12,280.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,940.12 : 19,230.90 = 8,901.78 : x
  2. Step 2: Convert to fraction form
    13,940.12/19,230.90 = 8,901.78/x
  3. Step 3: Cross multiply
    13,940.12x = 19,230.90 × 8,901.78
  4. Step 4: Simplify right side
    13,940.12x = 171,189,241.00
  5. Step 5: Solve for x
    x = 171,189,241.00/13,940.12
  6. Step 6: Final answer
    x = 12,280.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.