Home / 21,098.14-31,654.52-7,954.28

Finding the Fourth Proportional to 21,098.14, 31,654.52 and 7,954.28

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Solution

The fourth proportional to 21,098.14, 31,654.52 and 7,954.28 is: 11,934.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,098.14 : 31,654.52 = 7,954.28 : x
  2. Step 2: Convert to fraction form
    21,098.14/31,654.52 = 7,954.28/x
  3. Step 3: Cross multiply
    21,098.14x = 31,654.52 × 7,954.28
  4. Step 4: Simplify right side
    21,098.14x = 251,788,915.35
  5. Step 5: Solve for x
    x = 251,788,915.35/21,098.14
  6. Step 6: Final answer
    x = 11,934.18

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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.