Home / 12,261.21-16,920.54-6,672.21

Finding the Fourth Proportional to 12,261.21, 16,920.54 and 6,672.21

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Solution

The fourth proportional to 12,261.21, 16,920.54 and 6,672.21 is: 9,207.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,261.21 : 16,920.54 = 6,672.21 : x
  2. Step 2: Convert to fraction form
    12,261.21/16,920.54 = 6,672.21/x
  3. Step 3: Cross multiply
    12,261.21x = 16,920.54 × 6,672.21
  4. Step 4: Simplify right side
    12,261.21x = 112,897,396.19
  5. Step 5: Solve for x
    x = 112,897,396.19/12,261.21
  6. Step 6: Final answer
    x = 9,207.69

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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.