Home / 15,215.31-21,023.96-11,708.82

Finding the Fourth Proportional to 15,215.31, 21,023.96 and 11,708.82

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Solution

The fourth proportional to 15,215.31, 21,023.96 and 11,708.82 is: 16,178.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,215.31 : 21,023.96 = 11,708.82 : x
  2. Step 2: Convert to fraction form
    15,215.31/21,023.96 = 11,708.82/x
  3. Step 3: Cross multiply
    15,215.31x = 21,023.96 × 11,708.82
  4. Step 4: Simplify right side
    15,215.31x = 246,165,704.78
  5. Step 5: Solve for x
    x = 246,165,704.78/15,215.31
  6. Step 6: Final answer
    x = 16,178.82

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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.