Home / 28,699.12-39,604.64-16,123.84

Finding the Fourth Proportional to 28,699.12, 39,604.64 and 16,123.84

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Solution

The fourth proportional to 28,699.12, 39,604.64 and 16,123.84 is: 22,250.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,699.12 : 39,604.64 = 16,123.84 : x
  2. Step 2: Convert to fraction form
    28,699.12/39,604.64 = 16,123.84/x
  3. Step 3: Cross multiply
    28,699.12x = 39,604.64 × 16,123.84
  4. Step 4: Simplify right side
    28,699.12x = 638,578,878.62
  5. Step 5: Solve for x
    x = 638,578,878.62/28,699.12
  6. Step 6: Final answer
    x = 22,250.82

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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.