Home / 13,747.74-18,976.44-9,780.36

Finding the Fourth Proportional to 13,747.74, 18,976.44 and 9,780.36

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Solution

The fourth proportional to 13,747.74, 18,976.44 and 9,780.36 is: 13,500.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,747.74 : 18,976.44 = 9,780.36 : x
  2. Step 2: Convert to fraction form
    13,747.74/18,976.44 = 9,780.36/x
  3. Step 3: Cross multiply
    13,747.74x = 18,976.44 × 9,780.36
  4. Step 4: Simplify right side
    13,747.74x = 185,596,414.72
  5. Step 5: Solve for x
    x = 185,596,414.72/13,747.74
  6. Step 6: Final answer
    x = 13,500.14

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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.