Home / 12,522.90-17,281.81-6,857.56

Finding the Fourth Proportional to 12,522.90, 17,281.81 and 6,857.56

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Solution

The fourth proportional to 12,522.90, 17,281.81 and 6,857.56 is: 9,463.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,522.90 : 17,281.81 = 6,857.56 : x
  2. Step 2: Convert to fraction form
    12,522.90/17,281.81 = 6,857.56/x
  3. Step 3: Cross multiply
    12,522.90x = 17,281.81 × 6,857.56
  4. Step 4: Simplify right side
    12,522.90x = 118,511,048.98
  5. Step 5: Solve for x
    x = 118,511,048.98/12,522.90
  6. Step 6: Final answer
    x = 9,463.55

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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.