Home / 14,135.50-19,511.28-8,171.38

Finding the Fourth Proportional to 14,135.50, 19,511.28 and 8,171.38

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Solution

The fourth proportional to 14,135.50, 19,511.28 and 8,171.38 is: 11,278.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,135.50 : 19,511.28 = 8,171.38 : x
  2. Step 2: Convert to fraction form
    14,135.50/19,511.28 = 8,171.38/x
  3. Step 3: Cross multiply
    14,135.50x = 19,511.28 × 8,171.38
  4. Step 4: Simplify right side
    14,135.50x = 159,434,083.17
  5. Step 5: Solve for x
    x = 159,434,083.17/14,135.50
  6. Step 6: Final answer
    x = 11,278.98

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1.5x scale

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.