Home / 18,985.47-28,481.45-5,837.55

Finding the Fourth Proportional to 18,985.47, 28,481.45 and 5,837.55

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Solution

The fourth proportional to 18,985.47, 28,481.45 and 5,837.55 is: 8,757.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,985.47 : 28,481.45 = 5,837.55 : x
  2. Step 2: Convert to fraction form
    18,985.47/28,481.45 = 5,837.55/x
  3. Step 3: Cross multiply
    18,985.47x = 28,481.45 × 5,837.55
  4. Step 4: Simplify right side
    18,985.47x = 166,261,859.26
  5. Step 5: Solve for x
    x = 166,261,859.26/18,985.47
  6. Step 6: Final answer
    x = 8,757.32

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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.