Home / 12,261.30-16,921.15-7,225.73

Finding the Fourth Proportional to 12,261.30, 16,921.15 and 7,225.73

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Solution

The fourth proportional to 12,261.30, 16,921.15 and 7,225.73 is: 9,971.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,261.30 : 16,921.15 = 7,225.73 : x
  2. Step 2: Convert to fraction form
    12,261.30/16,921.15 = 7,225.73/x
  3. Step 3: Cross multiply
    12,261.30x = 16,921.15 × 7,225.73
  4. Step 4: Simplify right side
    12,261.30x = 122,267,664.28
  5. Step 5: Solve for x
    x = 122,267,664.28/12,261.30
  6. Step 6: Final answer
    x = 9,971.84

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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.