Home / 14,140.69-19,515.87-8,172.41

Finding the Fourth Proportional to 14,140.69, 19,515.87 and 8,172.41

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Solution

The fourth proportional to 14,140.69, 19,515.87 and 8,172.41 is: 11,278.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,140.69 : 19,515.87 = 8,172.41 : x
  2. Step 2: Convert to fraction form
    14,140.69/19,515.87 = 8,172.41/x
  3. Step 3: Cross multiply
    14,140.69x = 19,515.87 × 8,172.41
  4. Step 4: Simplify right side
    14,140.69x = 159,491,593.57
  5. Step 5: Solve for x
    x = 159,491,593.57/14,140.69
  6. Step 6: Final answer
    x = 11,278.91

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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.