Home / 21,156.26-31,736.39-7,116.39

Finding the Fourth Proportional to 21,156.26, 31,736.39 and 7,116.39

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Solution

The fourth proportional to 21,156.26, 31,736.39 and 7,116.39 is: 10,675.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,156.26 : 31,736.39 = 7,116.39 : x
  2. Step 2: Convert to fraction form
    21,156.26/31,736.39 = 7,116.39/x
  3. Step 3: Cross multiply
    21,156.26x = 31,736.39 × 7,116.39
  4. Step 4: Simplify right side
    21,156.26x = 225,848,492.85
  5. Step 5: Solve for x
    x = 225,848,492.85/21,156.26
  6. Step 6: Final answer
    x = 10,675.26

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1.5x scale

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.