Home / 12,629.10-17,427.86-7,324.40

Finding the Fourth Proportional to 12,629.10, 17,427.86 and 7,324.40

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Solution

The fourth proportional to 12,629.10, 17,427.86 and 7,324.40 is: 10,107.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,629.10 : 17,427.86 = 7,324.40 : x
  2. Step 2: Convert to fraction form
    12,629.10/17,427.86 = 7,324.40/x
  3. Step 3: Cross multiply
    12,629.10x = 17,427.86 × 7,324.40
  4. Step 4: Simplify right side
    12,629.10x = 127,648,617.78
  5. Step 5: Solve for x
    x = 127,648,617.78/12,629.10
  6. Step 6: Final answer
    x = 10,107.50

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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.