Home / 21,030.30-31,546.26-5,447.52

Finding the Fourth Proportional to 21,030.30, 31,546.26 and 5,447.52

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Solution

The fourth proportional to 21,030.30, 31,546.26 and 5,447.52 is: 8,171.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,030.30 : 31,546.26 = 5,447.52 : x
  2. Step 2: Convert to fraction form
    21,030.30/31,546.26 = 5,447.52/x
  3. Step 3: Cross multiply
    21,030.30x = 31,546.26 × 5,447.52
  4. Step 4: Simplify right side
    21,030.30x = 171,848,882.28
  5. Step 5: Solve for x
    x = 171,848,882.28/21,030.30
  6. Step 6: Final answer
    x = 8,171.49

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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.