Home / 12,787.04-17,628.36-9,945.56

Finding the Fourth Proportional to 12,787.04, 17,628.36 and 9,945.56

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Solution

The fourth proportional to 12,787.04, 17,628.36 and 9,945.56 is: 13,711.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,787.04 : 17,628.36 = 9,945.56 : x
  2. Step 2: Convert to fraction form
    12,787.04/17,628.36 = 9,945.56/x
  3. Step 3: Cross multiply
    12,787.04x = 17,628.36 × 9,945.56
  4. Step 4: Simplify right side
    12,787.04x = 175,323,912.08
  5. Step 5: Solve for x
    x = 175,323,912.08/12,787.04
  6. Step 6: Final answer
    x = 13,711.06

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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.