Home / 21,933.01-30,262.49-12,977.65

Finding the Fourth Proportional to 21,933.01, 30,262.49 and 12,977.65

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Solution

The fourth proportional to 21,933.01, 30,262.49 and 12,977.65 is: 17,906.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,933.01 : 30,262.49 = 12,977.65 : x
  2. Step 2: Convert to fraction form
    21,933.01/30,262.49 = 12,977.65/x
  3. Step 3: Cross multiply
    21,933.01x = 30,262.49 × 12,977.65
  4. Step 4: Simplify right side
    21,933.01x = 392,735,852.04
  5. Step 5: Solve for x
    x = 392,735,852.04/21,933.01
  6. Step 6: Final answer
    x = 17,906.16

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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.