Home / 19,135.56-28,705-5,284.56

Finding the Fourth Proportional to 19,135.56, 28,705 and 5,284.56

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Solution

The fourth proportional to 19,135.56, 28,705 and 5,284.56 is: 7,927.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,135.56 : 28,705 = 5,284.56 : x
  2. Step 2: Convert to fraction form
    19,135.56/28,705 = 5,284.56/x
  3. Step 3: Cross multiply
    19,135.56x = 28,705 × 5,284.56
  4. Step 4: Simplify right side
    19,135.56x = 151,693,294.80
  5. Step 5: Solve for x
    x = 151,693,294.80/19,135.56
  6. Step 6: Final answer
    x = 7,927.30

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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.