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Finding the Fourth Proportional to 14,042.64, 19,379.04 and 7,755.24

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Solution

The fourth proportional to 14,042.64, 19,379.04 and 7,755.24 is: 10,702.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,042.64 : 19,379.04 = 7,755.24 : x
  2. Step 2: Convert to fraction form
    14,042.64/19,379.04 = 7,755.24/x
  3. Step 3: Cross multiply
    14,042.64x = 19,379.04 × 7,755.24
  4. Step 4: Simplify right side
    14,042.64x = 150,289,106.17
  5. Step 5: Solve for x
    x = 150,289,106.17/14,042.64
  6. Step 6: Final answer
    x = 10,702.34

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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.