Home / 31,917.40-44,048.10-21,300.28

Finding the Fourth Proportional to 31,917.40, 44,048.10 and 21,300.28

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Solution

The fourth proportional to 31,917.40, 44,048.10 and 21,300.28 is: 29,395.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,917.40 : 44,048.10 = 21,300.28 : x
  2. Step 2: Convert to fraction form
    31,917.40/44,048.10 = 21,300.28/x
  3. Step 3: Cross multiply
    31,917.40x = 44,048.10 × 21,300.28
  4. Step 4: Simplify right side
    31,917.40x = 938,236,863.47
  5. Step 5: Solve for x
    x = 938,236,863.47/31,917.40
  6. Step 6: Final answer
    x = 29,395.78

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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.