Home / 28,712.34-39,623.40-16,137

Finding the Fourth Proportional to 28,712.34, 39,623.40 and 16,137

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Solution

The fourth proportional to 28,712.34, 39,623.40 and 16,137 is: 22,269.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,712.34 : 39,623.40 = 16,137 : x
  2. Step 2: Convert to fraction form
    28,712.34/39,623.40 = 16,137/x
  3. Step 3: Cross multiply
    28,712.34x = 39,623.40 × 16,137
  4. Step 4: Simplify right side
    28,712.34x = 639,402,805.80
  5. Step 5: Solve for x
    x = 639,402,805.80/28,712.34
  6. Step 6: Final answer
    x = 22,269.27

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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.