Home / 12,908.78-19,363.37-5,011.76

Finding the Fourth Proportional to 12,908.78, 19,363.37 and 5,011.76

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Solution

The fourth proportional to 12,908.78, 19,363.37 and 5,011.76 is: 7,517.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,908.78 : 19,363.37 = 5,011.76 : x
  2. Step 2: Convert to fraction form
    12,908.78/19,363.37 = 5,011.76/x
  3. Step 3: Cross multiply
    12,908.78x = 19,363.37 × 5,011.76
  4. Step 4: Simplify right side
    12,908.78x = 97,044,441.36
  5. Step 5: Solve for x
    x = 97,044,441.36/12,908.78
  6. Step 6: Final answer
    x = 7,517.71

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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.