Home / 17,817.30-26,725.38-7,428.78

Finding the Fourth Proportional to 17,817.30, 26,725.38 and 7,428.78

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Solution

The fourth proportional to 17,817.30, 26,725.38 and 7,428.78 is: 11,142.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,817.30 : 26,725.38 = 7,428.78 : x
  2. Step 2: Convert to fraction form
    17,817.30/26,725.38 = 7,428.78/x
  3. Step 3: Cross multiply
    17,817.30x = 26,725.38 × 7,428.78
  4. Step 4: Simplify right side
    17,817.30x = 198,536,968.44
  5. Step 5: Solve for x
    x = 198,536,968.44/17,817.30
  6. Step 6: Final answer
    x = 11,142.93

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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.