Home / 21,479.53-29,639.78-12,046.27

Finding the Fourth Proportional to 21,479.53, 29,639.78 and 12,046.27

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Solution

The fourth proportional to 21,479.53, 29,639.78 and 12,046.27 is: 16,622.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,479.53 : 29,639.78 = 12,046.27 : x
  2. Step 2: Convert to fraction form
    21,479.53/29,639.78 = 12,046.27/x
  3. Step 3: Cross multiply
    21,479.53x = 29,639.78 × 12,046.27
  4. Step 4: Simplify right side
    21,479.53x = 357,048,732.39
  5. Step 5: Solve for x
    x = 357,048,732.39/21,479.53
  6. Step 6: Final answer
    x = 16,622.74

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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.