Home / 51,933.90-77,900.80-12,491

Finding the Fourth Proportional to 51,933.90, 77,900.80 and 12,491

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Solution

The fourth proportional to 51,933.90, 77,900.80 and 12,491 is: 18,736.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,933.90 : 77,900.80 = 12,491 : x
  2. Step 2: Convert to fraction form
    51,933.90/77,900.80 = 12,491/x
  3. Step 3: Cross multiply
    51,933.90x = 77,900.80 × 12,491
  4. Step 4: Simplify right side
    51,933.90x = 973,058,892.80
  5. Step 5: Solve for x
    x = 973,058,892.80/51,933.90
  6. Step 6: Final answer
    x = 18,736.49

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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.