Home / 13,660.49-20,483.86-7,963.28

Finding the Fourth Proportional to 13,660.49, 20,483.86 and 7,963.28

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Solution

The fourth proportional to 13,660.49, 20,483.86 and 7,963.28 is: 11,940.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,660.49 : 20,483.86 = 7,963.28 : x
  2. Step 2: Convert to fraction form
    13,660.49/20,483.86 = 7,963.28/x
  3. Step 3: Cross multiply
    13,660.49x = 20,483.86 × 7,963.28
  4. Step 4: Simplify right side
    13,660.49x = 163,118,712.66
  5. Step 5: Solve for x
    x = 163,118,712.66/13,660.49
  6. Step 6: Final answer
    x = 11,940.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.