Home / 21,478.25-29,639.99-12,046.81

Finding the Fourth Proportional to 21,478.25, 29,639.99 and 12,046.81

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Solution

The fourth proportional to 21,478.25, 29,639.99 and 12,046.81 is: 16,624.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,478.25 : 29,639.99 = 12,046.81 : x
  2. Step 2: Convert to fraction form
    21,478.25/29,639.99 = 12,046.81/x
  3. Step 3: Cross multiply
    21,478.25x = 29,639.99 × 12,046.81
  4. Step 4: Simplify right side
    21,478.25x = 357,067,327.93
  5. Step 5: Solve for x
    x = 357,067,327.93/21,478.25
  6. Step 6: Final answer
    x = 16,624.60

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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.