Home / 13,925.64-19,217.30-7,638

Finding the Fourth Proportional to 13,925.64, 19,217.30 and 7,638

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Solution

The fourth proportional to 13,925.64, 19,217.30 and 7,638 is: 10,540.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,925.64 : 19,217.30 = 7,638 : x
  2. Step 2: Convert to fraction form
    13,925.64/19,217.30 = 7,638/x
  3. Step 3: Cross multiply
    13,925.64x = 19,217.30 × 7,638
  4. Step 4: Simplify right side
    13,925.64x = 146,781,737.40
  5. Step 5: Solve for x
    x = 146,781,737.40/13,925.64
  6. Step 6: Final answer
    x = 10,540.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.