Home / 11,961.81-16,506.81-6,656.51

Finding the Fourth Proportional to 11,961.81, 16,506.81 and 6,656.51

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Solution

The fourth proportional to 11,961.81, 16,506.81 and 6,656.51 is: 9,185.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,961.81 : 16,506.81 = 6,656.51 : x
  2. Step 2: Convert to fraction form
    11,961.81/16,506.81 = 6,656.51/x
  3. Step 3: Cross multiply
    11,961.81x = 16,506.81 × 6,656.51
  4. Step 4: Simplify right side
    11,961.81x = 109,877,787.10
  5. Step 5: Solve for x
    x = 109,877,787.10/11,961.81
  6. Step 6: Final answer
    x = 9,185.72

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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.