Home / 21,004.84-31,321.49-19,574.92

Finding the Fourth Proportional to 21,004.84, 31,321.49 and 19,574.92

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Solution

The fourth proportional to 21,004.84, 31,321.49 and 19,574.92 is: 29,189.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.84 : 31,321.49 = 19,574.92 : x
  2. Step 2: Convert to fraction form
    21,004.84/31,321.49 = 19,574.92/x
  3. Step 3: Cross multiply
    21,004.84x = 31,321.49 × 19,574.92
  4. Step 4: Simplify right side
    21,004.84x = 613,115,661.03
  5. Step 5: Solve for x
    x = 613,115,661.03/21,004.84
  6. Step 6: Final answer
    x = 29,189.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.