Home / 21,219.42-29,269.83-12,599.76

Finding the Fourth Proportional to 21,219.42, 29,269.83 and 12,599.76

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Solution

The fourth proportional to 21,219.42, 29,269.83 and 12,599.76 is: 17,379.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,219.42 : 29,269.83 = 12,599.76 : x
  2. Step 2: Convert to fraction form
    21,219.42/29,269.83 = 12,599.76/x
  3. Step 3: Cross multiply
    21,219.42x = 29,269.83 × 12,599.76
  4. Step 4: Simplify right side
    21,219.42x = 368,792,843.42
  5. Step 5: Solve for x
    x = 368,792,843.42/21,219.42
  6. Step 6: Final answer
    x = 17,379.97

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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.