Home / 13,755.91-18,983.01-7,787.56

Finding the Fourth Proportional to 13,755.91, 18,983.01 and 7,787.56

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Solution

The fourth proportional to 13,755.91, 18,983.01 and 7,787.56 is: 10,746.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.91 : 18,983.01 = 7,787.56 : x
  2. Step 2: Convert to fraction form
    13,755.91/18,983.01 = 7,787.56/x
  3. Step 3: Cross multiply
    13,755.91x = 18,983.01 × 7,787.56
  4. Step 4: Simplify right side
    13,755.91x = 147,831,329.36
  5. Step 5: Solve for x
    x = 147,831,329.36/13,755.91
  6. Step 6: Final answer
    x = 10,746.75

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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.