Home / 11,717.31-16,170.70-7,731.51

Finding the Fourth Proportional to 11,717.31, 16,170.70 and 7,731.51

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Solution

The fourth proportional to 11,717.31, 16,170.70 and 7,731.51 is: 10,670.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,717.31 : 16,170.70 = 7,731.51 : x
  2. Step 2: Convert to fraction form
    11,717.31/16,170.70 = 7,731.51/x
  3. Step 3: Cross multiply
    11,717.31x = 16,170.70 × 7,731.51
  4. Step 4: Simplify right side
    11,717.31x = 125,023,928.76
  5. Step 5: Solve for x
    x = 125,023,928.76/11,717.31
  6. Step 6: Final answer
    x = 10,670.02

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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.