Home / 21,712.76-29,964.15-12,152.57

Finding the Fourth Proportional to 21,712.76, 29,964.15 and 12,152.57

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Solution

The fourth proportional to 21,712.76, 29,964.15 and 12,152.57 is: 16,770.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,712.76 : 29,964.15 = 12,152.57 : x
  2. Step 2: Convert to fraction form
    21,712.76/29,964.15 = 12,152.57/x
  3. Step 3: Cross multiply
    21,712.76x = 29,964.15 × 12,152.57
  4. Step 4: Simplify right side
    21,712.76x = 364,141,505.28
  5. Step 5: Solve for x
    x = 364,141,505.28/21,712.76
  6. Step 6: Final answer
    x = 16,770.85

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1.5x scale

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.