Home / 31,417.36-43,338.56-19,911.20

Finding the Fourth Proportional to 31,417.36, 43,338.56 and 19,911.20

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Solution

The fourth proportional to 31,417.36, 43,338.56 and 19,911.20 is: 27,466.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,417.36 : 43,338.56 = 19,911.20 : x
  2. Step 2: Convert to fraction form
    31,417.36/43,338.56 = 19,911.20/x
  3. Step 3: Cross multiply
    31,417.36x = 43,338.56 × 19,911.20
  4. Step 4: Simplify right side
    31,417.36x = 862,922,735.87
  5. Step 5: Solve for x
    x = 862,922,735.87/31,417.36
  6. Step 6: Final answer
    x = 27,466.43

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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.