Home / 12,442.50-17,170.65-7,137.09

Finding the Fourth Proportional to 12,442.50, 17,170.65 and 7,137.09

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Solution

The fourth proportional to 12,442.50, 17,170.65 and 7,137.09 is: 9,849.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,442.50 : 17,170.65 = 7,137.09 : x
  2. Step 2: Convert to fraction form
    12,442.50/17,170.65 = 7,137.09/x
  3. Step 3: Cross multiply
    12,442.50x = 17,170.65 × 7,137.09
  4. Step 4: Simplify right side
    12,442.50x = 122,548,474.41
  5. Step 5: Solve for x
    x = 122,548,474.41/12,442.50
  6. Step 6: Final answer
    x = 9,849.18

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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.