Home / 21,004.97-31,507.47-19,721.93

Finding the Fourth Proportional to 21,004.97, 31,507.47 and 19,721.93

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Solution

The fourth proportional to 21,004.97, 31,507.47 and 19,721.93 is: 29,582.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.97 : 31,507.47 = 19,721.93 : x
  2. Step 2: Convert to fraction form
    21,004.97/31,507.47 = 19,721.93/x
  3. Step 3: Cross multiply
    21,004.97x = 31,507.47 × 19,721.93
  4. Step 4: Simplify right side
    21,004.97x = 621,387,960.28
  5. Step 5: Solve for x
    x = 621,387,960.28/21,004.97
  6. Step 6: Final answer
    x = 29,582.91

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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.