Home / 13,872.38-19,142.32-8,207.30

Finding the Fourth Proportional to 13,872.38, 19,142.32 and 8,207.30

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Solution

The fourth proportional to 13,872.38, 19,142.32 and 8,207.30 is: 11,325.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.38 : 19,142.32 = 8,207.30 : x
  2. Step 2: Convert to fraction form
    13,872.38/19,142.32 = 8,207.30/x
  3. Step 3: Cross multiply
    13,872.38x = 19,142.32 × 8,207.30
  4. Step 4: Simplify right side
    13,872.38x = 157,106,762.94
  5. Step 5: Solve for x
    x = 157,106,762.94/13,872.38
  6. Step 6: Final answer
    x = 11,325.15

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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.