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Finding the Fourth Proportional to 28,673.82, 42,994.32 and 11,123.16

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Solution

The fourth proportional to 28,673.82, 42,994.32 and 11,123.16 is: 16,678.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,673.82 : 42,994.32 = 11,123.16 : x
  2. Step 2: Convert to fraction form
    28,673.82/42,994.32 = 11,123.16/x
  3. Step 3: Cross multiply
    28,673.82x = 42,994.32 × 11,123.16
  4. Step 4: Simplify right side
    28,673.82x = 478,232,700.45
  5. Step 5: Solve for x
    x = 478,232,700.45/28,673.82
  6. Step 6: Final answer
    x = 16,678.37

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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.