Home / 51,983.80-77,974.98-12,540.58

Finding the Fourth Proportional to 51,983.80, 77,974.98 and 12,540.58

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Solution

The fourth proportional to 51,983.80, 77,974.98 and 12,540.58 is: 18,810.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,983.80 : 77,974.98 = 12,540.58 : x
  2. Step 2: Convert to fraction form
    51,983.80/77,974.98 = 12,540.58/x
  3. Step 3: Cross multiply
    51,983.80x = 77,974.98 × 12,540.58
  4. Step 4: Simplify right side
    51,983.80x = 977,851,474.69
  5. Step 5: Solve for x
    x = 977,851,474.69/51,983.80
  6. Step 6: Final answer
    x = 18,810.70

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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.