Home / 14,110.78-19,472.70-8,142.32

Finding the Fourth Proportional to 14,110.78, 19,472.70 and 8,142.32

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Solution

The fourth proportional to 14,110.78, 19,472.70 and 8,142.32 is: 11,236.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,110.78 : 19,472.70 = 8,142.32 : x
  2. Step 2: Convert to fraction form
    14,110.78/19,472.70 = 8,142.32/x
  3. Step 3: Cross multiply
    14,110.78x = 19,472.70 × 8,142.32
  4. Step 4: Simplify right side
    14,110.78x = 158,553,033.88
  5. Step 5: Solve for x
    x = 158,553,033.88/14,110.78
  6. Step 6: Final answer
    x = 11,236.30

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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.