Home / 28,705.14-39,616.74-16,129.89

Finding the Fourth Proportional to 28,705.14, 39,616.74 and 16,129.89

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Solution

The fourth proportional to 28,705.14, 39,616.74 and 16,129.89 is: 22,261.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,705.14 : 39,616.74 = 16,129.89 : x
  2. Step 2: Convert to fraction form
    28,705.14/39,616.74 = 16,129.89/x
  3. Step 3: Cross multiply
    28,705.14x = 39,616.74 × 16,129.89
  4. Step 4: Simplify right side
    28,705.14x = 639,013,658.36
  5. Step 5: Solve for x
    x = 639,013,658.36/28,705.14
  6. Step 6: Final answer
    x = 22,261.30

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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.