Home / 13,568.52-18,724.60-7,907.15

Finding the Fourth Proportional to 13,568.52, 18,724.60 and 7,907.15

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Solution

The fourth proportional to 13,568.52, 18,724.60 and 7,907.15 is: 10,911.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,568.52 : 18,724.60 = 7,907.15 : x
  2. Step 2: Convert to fraction form
    13,568.52/18,724.60 = 7,907.15/x
  3. Step 3: Cross multiply
    13,568.52x = 18,724.60 × 7,907.15
  4. Step 4: Simplify right side
    13,568.52x = 148,058,127.27
  5. Step 5: Solve for x
    x = 148,058,127.27/13,568.52
  6. Step 6: Final answer
    x = 10,911.89

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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.