Home / 14,143.12-19,516.20-7,855.12

Finding the Fourth Proportional to 14,143.12, 19,516.20 and 7,855.12

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Solution

The fourth proportional to 14,143.12, 19,516.20 and 7,855.12 is: 10,839.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,143.12 : 19,516.20 = 7,855.12 : x
  2. Step 2: Convert to fraction form
    14,143.12/19,516.20 = 7,855.12/x
  3. Step 3: Cross multiply
    14,143.12x = 19,516.20 × 7,855.12
  4. Step 4: Simplify right side
    14,143.12x = 153,302,092.94
  5. Step 5: Solve for x
    x = 153,302,092.94/14,143.12
  6. Step 6: Final answer
    x = 10,839.34

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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.