Home / 12,116.79-18,171.54-7,956.63

Finding the Fourth Proportional to 12,116.79, 18,171.54 and 7,956.63

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Solution

The fourth proportional to 12,116.79, 18,171.54 and 7,956.63 is: 11,932.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,116.79 : 18,171.54 = 7,956.63 : x
  2. Step 2: Convert to fraction form
    12,116.79/18,171.54 = 7,956.63/x
  3. Step 3: Cross multiply
    12,116.79x = 18,171.54 × 7,956.63
  4. Step 4: Simplify right side
    12,116.79x = 144,584,220.31
  5. Step 5: Solve for x
    x = 144,584,220.31/12,116.79
  6. Step 6: Final answer
    x = 11,932.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.