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Finding the Fourth Proportional to 12,602.36, 18,920.28 and 10,765.28

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Solution

The fourth proportional to 12,602.36, 18,920.28 and 10,765.28 is: 16,162.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,602.36 : 18,920.28 = 10,765.28 : x
  2. Step 2: Convert to fraction form
    12,602.36/18,920.28 = 10,765.28/x
  3. Step 3: Cross multiply
    12,602.36x = 18,920.28 × 10,765.28
  4. Step 4: Simplify right side
    12,602.36x = 203,682,111.88
  5. Step 5: Solve for x
    x = 203,682,111.88/12,602.36
  6. Step 6: Final answer
    x = 16,162.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.