Home / 30,331.52-41,859.60-18,395.36

Finding the Fourth Proportional to 30,331.52, 41,859.60 and 18,395.36

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Solution

The fourth proportional to 30,331.52, 41,859.60 and 18,395.36 is: 25,386.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,331.52 : 41,859.60 = 18,395.36 : x
  2. Step 2: Convert to fraction form
    30,331.52/41,859.60 = 18,395.36/x
  3. Step 3: Cross multiply
    30,331.52x = 41,859.60 × 18,395.36
  4. Step 4: Simplify right side
    30,331.52x = 770,022,411.46
  5. Step 5: Solve for x
    x = 770,022,411.46/30,331.52
  6. Step 6: Final answer
    x = 25,386.87

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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.