Home / 21,383.93-29,508.71-12,429.99

Finding the Fourth Proportional to 21,383.93, 29,508.71 and 12,429.99

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Solution

The fourth proportional to 21,383.93, 29,508.71 and 12,429.99 is: 17,152.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,383.93 : 29,508.71 = 12,429.99 : x
  2. Step 2: Convert to fraction form
    21,383.93/29,508.71 = 12,429.99/x
  3. Step 3: Cross multiply
    21,383.93x = 29,508.71 × 12,429.99
  4. Step 4: Simplify right side
    21,383.93x = 366,792,908.06
  5. Step 5: Solve for x
    x = 366,792,908.06/21,383.93
  6. Step 6: Final answer
    x = 17,152.73

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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.