Home / 12,261.51-16,920.90-6,956.82

Finding the Fourth Proportional to 12,261.51, 16,920.90 and 6,956.82

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Solution

The fourth proportional to 12,261.51, 16,920.90 and 6,956.82 is: 9,600.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,261.51 : 16,920.90 = 6,956.82 : x
  2. Step 2: Convert to fraction form
    12,261.51/16,920.90 = 6,956.82/x
  3. Step 3: Cross multiply
    12,261.51x = 16,920.90 × 6,956.82
  4. Step 4: Simplify right side
    12,261.51x = 117,715,655.54
  5. Step 5: Solve for x
    x = 117,715,655.54/12,261.51
  6. Step 6: Final answer
    x = 9,600.42

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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.