Home / 15,628.31-21,566.89-8,458.06

Finding the Fourth Proportional to 15,628.31, 21,566.89 and 8,458.06

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Solution

The fourth proportional to 15,628.31, 21,566.89 and 8,458.06 is: 11,672.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,628.31 : 21,566.89 = 8,458.06 : x
  2. Step 2: Convert to fraction form
    15,628.31/21,566.89 = 8,458.06/x
  3. Step 3: Cross multiply
    15,628.31x = 21,566.89 × 8,458.06
  4. Step 4: Simplify right side
    15,628.31x = 182,414,107.38
  5. Step 5: Solve for x
    x = 182,414,107.38/15,628.31
  6. Step 6: Final answer
    x = 11,672.03

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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.