Home / 13,960.35-19,260.94-7,990.90

Finding the Fourth Proportional to 13,960.35, 19,260.94 and 7,990.90

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Solution

The fourth proportional to 13,960.35, 19,260.94 and 7,990.90 is: 11,024.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,960.35 : 19,260.94 = 7,990.90 : x
  2. Step 2: Convert to fraction form
    13,960.35/19,260.94 = 7,990.90/x
  3. Step 3: Cross multiply
    13,960.35x = 19,260.94 × 7,990.90
  4. Step 4: Simplify right side
    13,960.35x = 153,912,300.64
  5. Step 5: Solve for x
    x = 153,912,300.64/13,960.35
  6. Step 6: Final answer
    x = 11,024.96

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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.