Home / 12,490.90-17,237.12-6,825.66

Finding the Fourth Proportional to 12,490.90, 17,237.12 and 6,825.66

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Solution

The fourth proportional to 12,490.90, 17,237.12 and 6,825.66 is: 9,419.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,490.90 : 17,237.12 = 6,825.66 : x
  2. Step 2: Convert to fraction form
    12,490.90/17,237.12 = 6,825.66/x
  3. Step 3: Cross multiply
    12,490.90x = 17,237.12 × 6,825.66
  4. Step 4: Simplify right side
    12,490.90x = 117,654,720.50
  5. Step 5: Solve for x
    x = 117,654,720.50/12,490.90
  6. Step 6: Final answer
    x = 9,419.23

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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.