Home / 21,157.58-31,743.12-6,368.06

Finding the Fourth Proportional to 21,157.58, 31,743.12 and 6,368.06

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Solution

The fourth proportional to 21,157.58, 31,743.12 and 6,368.06 is: 9,554.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,157.58 : 31,743.12 = 6,368.06 : x
  2. Step 2: Convert to fraction form
    21,157.58/31,743.12 = 6,368.06/x
  3. Step 3: Cross multiply
    21,157.58x = 31,743.12 × 6,368.06
  4. Step 4: Simplify right side
    21,157.58x = 202,142,092.75
  5. Step 5: Solve for x
    x = 202,142,092.75/21,157.58
  6. Step 6: Final answer
    x = 9,554.12

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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.