Home / 21,903.73-30,215.76-13,932.13

Finding the Fourth Proportional to 21,903.73, 30,215.76 and 13,932.13

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Solution

The fourth proportional to 21,903.73, 30,215.76 and 13,932.13 is: 19,219.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,903.73 : 30,215.76 = 13,932.13 : x
  2. Step 2: Convert to fraction form
    21,903.73/30,215.76 = 13,932.13/x
  3. Step 3: Cross multiply
    21,903.73x = 30,215.76 × 13,932.13
  4. Step 4: Simplify right side
    21,903.73x = 420,969,896.37
  5. Step 5: Solve for x
    x = 420,969,896.37/21,903.73
  6. Step 6: Final answer
    x = 19,219.10

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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.