Home / 18,905.48-28,333.56-7,799.48

Finding the Fourth Proportional to 18,905.48, 28,333.56 and 7,799.48

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Solution

The fourth proportional to 18,905.48, 28,333.56 and 7,799.48 is: 11,689.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.48 : 28,333.56 = 7,799.48 : x
  2. Step 2: Convert to fraction form
    18,905.48/28,333.56 = 7,799.48/x
  3. Step 3: Cross multiply
    18,905.48x = 28,333.56 × 7,799.48
  4. Step 4: Simplify right side
    18,905.48x = 220,987,034.55
  5. Step 5: Solve for x
    x = 220,987,034.55/18,905.48
  6. Step 6: Final answer
    x = 11,689.05

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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.