Home / 12,439.36-17,153.13-7,963.30

Finding the Fourth Proportional to 12,439.36, 17,153.13 and 7,963.30

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Solution

The fourth proportional to 12,439.36, 17,153.13 and 7,963.30 is: 10,980.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,439.36 : 17,153.13 = 7,963.30 : x
  2. Step 2: Convert to fraction form
    12,439.36/17,153.13 = 7,963.30/x
  3. Step 3: Cross multiply
    12,439.36x = 17,153.13 × 7,963.30
  4. Step 4: Simplify right side
    12,439.36x = 136,595,520.13
  5. Step 5: Solve for x
    x = 136,595,520.13/12,439.36
  6. Step 6: Final answer
    x = 10,980.91

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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.