Home / 13,149.15-19,731.53-5,255.39

Finding the Fourth Proportional to 13,149.15, 19,731.53 and 5,255.39

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Solution

The fourth proportional to 13,149.15, 19,731.53 and 5,255.39 is: 7,886.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.15 : 19,731.53 = 5,255.39 : x
  2. Step 2: Convert to fraction form
    13,149.15/19,731.53 = 5,255.39/x
  3. Step 3: Cross multiply
    13,149.15x = 19,731.53 × 5,255.39
  4. Step 4: Simplify right side
    13,149.15x = 103,696,885.45
  5. Step 5: Solve for x
    x = 103,696,885.45/13,149.15
  6. Step 6: Final answer
    x = 7,886.20

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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.