Home / 31,390.36-43,320.81-17,243.35

Finding the Fourth Proportional to 31,390.36, 43,320.81 and 17,243.35

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Solution

The fourth proportional to 31,390.36, 43,320.81 and 17,243.35 is: 23,796.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,390.36 : 43,320.81 = 17,243.35 : x
  2. Step 2: Convert to fraction form
    31,390.36/43,320.81 = 17,243.35/x
  3. Step 3: Cross multiply
    31,390.36x = 43,320.81 × 17,243.35
  4. Step 4: Simplify right side
    31,390.36x = 746,995,845.47
  5. Step 5: Solve for x
    x = 746,995,845.47/31,390.36
  6. Step 6: Final answer
    x = 23,796.98

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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.