Home / 21,712.77-29,964.15-12,152.57

Finding the Fourth Proportional to 21,712.77, 29,964.15 and 12,152.57

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Solution

The fourth proportional to 21,712.77, 29,964.15 and 12,152.57 is: 16,770.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,712.77 : 29,964.15 = 12,152.57 : x
  2. Step 2: Convert to fraction form
    21,712.77/29,964.15 = 12,152.57/x
  3. Step 3: Cross multiply
    21,712.77x = 29,964.15 × 12,152.57
  4. Step 4: Simplify right side
    21,712.77x = 364,141,280.54
  5. Step 5: Solve for x
    x = 364,141,280.54/21,712.77
  6. Step 6: Final answer
    x = 16,770.83

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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.