Home / 14,140.88-19,516.55-8,172.39

Finding the Fourth Proportional to 14,140.88, 19,516.55 and 8,172.39

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Solution

The fourth proportional to 14,140.88, 19,516.55 and 8,172.39 is: 11,279.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,140.88 : 19,516.55 = 8,172.39 : x
  2. Step 2: Convert to fraction form
    14,140.88/19,516.55 = 8,172.39/x
  3. Step 3: Cross multiply
    14,140.88x = 19,516.55 × 8,172.39
  4. Step 4: Simplify right side
    14,140.88x = 159,496,890.38
  5. Step 5: Solve for x
    x = 159,496,890.38/14,140.88
  6. Step 6: Final answer
    x = 11,279.14

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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.