Home / 15,864.21-21,891.60-8,693.82

Finding the Fourth Proportional to 15,864.21, 21,891.60 and 8,693.82

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Solution

The fourth proportional to 15,864.21, 21,891.60 and 8,693.82 is: 11,996.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,864.21 : 21,891.60 = 8,693.82 : x
  2. Step 2: Convert to fraction form
    15,864.21/21,891.60 = 8,693.82/x
  3. Step 3: Cross multiply
    15,864.21x = 21,891.60 × 8,693.82
  4. Step 4: Simplify right side
    15,864.21x = 190,321,629.91
  5. Step 5: Solve for x
    x = 190,321,629.91/15,864.21
  6. Step 6: Final answer
    x = 11,996.92

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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.