Home / 21,631.71-29,852.79-12,200.07

Finding the Fourth Proportional to 21,631.71, 29,852.79 and 12,200.07

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Solution

The fourth proportional to 21,631.71, 29,852.79 and 12,200.07 is: 16,836.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,631.71 : 29,852.79 = 12,200.07 : x
  2. Step 2: Convert to fraction form
    21,631.71/29,852.79 = 12,200.07/x
  3. Step 3: Cross multiply
    21,631.71x = 29,852.79 × 12,200.07
  4. Step 4: Simplify right side
    21,631.71x = 364,206,127.70
  5. Step 5: Solve for x
    x = 364,206,127.70/21,631.71
  6. Step 6: Final answer
    x = 16,836.68

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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.