Home / 31,110.36-42,916.68-19,761.36

Finding the Fourth Proportional to 31,110.36, 42,916.68 and 19,761.36

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Solution

The fourth proportional to 31,110.36, 42,916.68 and 19,761.36 is: 27,260.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,110.36 : 42,916.68 = 19,761.36 : x
  2. Step 2: Convert to fraction form
    31,110.36/42,916.68 = 19,761.36/x
  3. Step 3: Cross multiply
    31,110.36x = 42,916.68 × 19,761.36
  4. Step 4: Simplify right side
    31,110.36x = 848,091,963.48
  5. Step 5: Solve for x
    x = 848,091,963.48/31,110.36
  6. Step 6: Final answer
    x = 27,260.76

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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.