Home / 12,905.21-19,358.72-5,114

Finding the Fourth Proportional to 12,905.21, 19,358.72 and 5,114

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Solution

The fourth proportional to 12,905.21, 19,358.72 and 5,114 is: 7,671.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905.21 : 19,358.72 = 5,114 : x
  2. Step 2: Convert to fraction form
    12,905.21/19,358.72 = 5,114/x
  3. Step 3: Cross multiply
    12,905.21x = 19,358.72 × 5,114
  4. Step 4: Simplify right side
    12,905.21x = 99,000,494.08
  5. Step 5: Solve for x
    x = 99,000,494.08/12,905.21
  6. Step 6: Final answer
    x = 7,671.36

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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.