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Finding the Fourth Proportional to 13,703, 18,910.14 and 7,415.42

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Solution

The fourth proportional to 13,703, 18,910.14 and 7,415.42 is: 10,233.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,703 : 18,910.14 = 7,415.42 : x
  2. Step 2: Convert to fraction form
    13,703/18,910.14 = 7,415.42/x
  3. Step 3: Cross multiply
    13,703x = 18,910.14 × 7,415.42
  4. Step 4: Simplify right side
    13,703x = 140,226,630.36
  5. Step 5: Solve for x
    x = 140,226,630.36/13,703
  6. Step 6: Final answer
    x = 10,233.28

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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.