Home / 18,744.56-28,116.82-7,656.46

Finding the Fourth Proportional to 18,744.56, 28,116.82 and 7,656.46

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Solution

The fourth proportional to 18,744.56, 28,116.82 and 7,656.46 is: 11,484.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,744.56 : 28,116.82 = 7,656.46 : x
  2. Step 2: Convert to fraction form
    18,744.56/28,116.82 = 7,656.46/x
  3. Step 3: Cross multiply
    18,744.56x = 28,116.82 × 7,656.46
  4. Step 4: Simplify right side
    18,744.56x = 215,275,307.66
  5. Step 5: Solve for x
    x = 215,275,307.66/18,744.56
  6. Step 6: Final answer
    x = 11,484.68

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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.