Home / 12,642.85-17,450.60-7,339.38

Finding the Fourth Proportional to 12,642.85, 17,450.60 and 7,339.38

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Solution

The fourth proportional to 12,642.85, 17,450.60 and 7,339.38 is: 10,130.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,642.85 : 17,450.60 = 7,339.38 : x
  2. Step 2: Convert to fraction form
    12,642.85/17,450.60 = 7,339.38/x
  3. Step 3: Cross multiply
    12,642.85x = 17,450.60 × 7,339.38
  4. Step 4: Simplify right side
    12,642.85x = 128,076,584.63
  5. Step 5: Solve for x
    x = 128,076,584.63/12,642.85
  6. Step 6: Final answer
    x = 10,130.36

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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.