Home / 12,648.67-18,977.93-5,251.25

Finding the Fourth Proportional to 12,648.67, 18,977.93 and 5,251.25

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Solution

The fourth proportional to 12,648.67, 18,977.93 and 5,251.25 is: 7,878.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,648.67 : 18,977.93 = 5,251.25 : x
  2. Step 2: Convert to fraction form
    12,648.67/18,977.93 = 5,251.25/x
  3. Step 3: Cross multiply
    12,648.67x = 18,977.93 × 5,251.25
  4. Step 4: Simplify right side
    12,648.67x = 99,657,854.91
  5. Step 5: Solve for x
    x = 99,657,854.91/12,648.67
  6. Step 6: Final answer
    x = 7,878.92

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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.