Home / 30,982.23-46,342.13-21,009.51

Finding the Fourth Proportional to 30,982.23, 46,342.13 and 21,009.51

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Solution

The fourth proportional to 30,982.23, 46,342.13 and 21,009.51 is: 31,425.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,982.23 : 46,342.13 = 21,009.51 : x
  2. Step 2: Convert to fraction form
    30,982.23/46,342.13 = 21,009.51/x
  3. Step 3: Cross multiply
    30,982.23x = 46,342.13 × 21,009.51
  4. Step 4: Simplify right side
    30,982.23x = 973,625,338.61
  5. Step 5: Solve for x
    x = 973,625,338.61/30,982.23
  6. Step 6: Final answer
    x = 31,425.28

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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.