Home / 21,237.73-31,836.70-7,187.92

Finding the Fourth Proportional to 21,237.73, 31,836.70 and 7,187.92

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Solution

The fourth proportional to 21,237.73, 31,836.70 and 7,187.92 is: 10,775.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,237.73 : 31,836.70 = 7,187.92 : x
  2. Step 2: Convert to fraction form
    21,237.73/31,836.70 = 7,187.92/x
  3. Step 3: Cross multiply
    21,237.73x = 31,836.70 × 7,187.92
  4. Step 4: Simplify right side
    21,237.73x = 228,839,634.69
  5. Step 5: Solve for x
    x = 228,839,634.69/21,237.73
  6. Step 6: Final answer
    x = 10,775.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.