Home / 12,927.40-19,400.70-5,141.80

Finding the Fourth Proportional to 12,927.40, 19,400.70 and 5,141.80

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Solution

The fourth proportional to 12,927.40, 19,400.70 and 5,141.80 is: 7,716.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,927.40 : 19,400.70 = 5,141.80 : x
  2. Step 2: Convert to fraction form
    12,927.40/19,400.70 = 5,141.80/x
  3. Step 3: Cross multiply
    12,927.40x = 19,400.70 × 5,141.80
  4. Step 4: Simplify right side
    12,927.40x = 99,754,519.26
  5. Step 5: Solve for x
    x = 99,754,519.26/12,927.40
  6. Step 6: Final answer
    x = 7,716.52

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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.