Home / 28,018.82-42,031.87-11,379.39

Finding the Fourth Proportional to 28,018.82, 42,031.87 and 11,379.39

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Solution

The fourth proportional to 28,018.82, 42,031.87 and 11,379.39 is: 17,070.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,018.82 : 42,031.87 = 11,379.39 : x
  2. Step 2: Convert to fraction form
    28,018.82/42,031.87 = 11,379.39/x
  3. Step 3: Cross multiply
    28,018.82x = 42,031.87 × 11,379.39
  4. Step 4: Simplify right side
    28,018.82x = 478,297,041.16
  5. Step 5: Solve for x
    x = 478,297,041.16/28,018.82
  6. Step 6: Final answer
    x = 17,070.56

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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.