Home / 51,983.55-77,974.59-12,540.33

Finding the Fourth Proportional to 51,983.55, 77,974.59 and 12,540.33

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Solution

The fourth proportional to 51,983.55, 77,974.59 and 12,540.33 is: 18,810.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,983.55 : 77,974.59 = 12,540.33 : x
  2. Step 2: Convert to fraction form
    51,983.55/77,974.59 = 12,540.33/x
  3. Step 3: Cross multiply
    51,983.55x = 77,974.59 × 12,540.33
  4. Step 4: Simplify right side
    51,983.55x = 977,827,090.21
  5. Step 5: Solve for x
    x = 977,827,090.21/51,983.55
  6. Step 6: Final answer
    x = 18,810.32

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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.