Home / 13,755.45-18,982.98-7,787.00

Finding the Fourth Proportional to 13,755.45, 18,982.98 and 7,787.00

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Solution

The fourth proportional to 13,755.45, 18,982.98 and 7,787.00 is: 10,746.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.45 : 18,982.98 = 7,787.00 : x
  2. Step 2: Convert to fraction form
    13,755.45/18,982.98 = 7,787.00/x
  3. Step 3: Cross multiply
    13,755.45x = 18,982.98 × 7,787.00
  4. Step 4: Simplify right side
    13,755.45x = 147,820,331.41
  5. Step 5: Solve for x
    x = 147,820,331.41/13,755.45
  6. Step 6: Final answer
    x = 10,746.31

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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.