Home / 31,585.75-43,568.69-18,830.07

Finding the Fourth Proportional to 31,585.75, 43,568.69 and 18,830.07

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Solution

The fourth proportional to 31,585.75, 43,568.69 and 18,830.07 is: 25,973.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,585.75 : 43,568.69 = 18,830.07 : x
  2. Step 2: Convert to fraction form
    31,585.75/43,568.69 = 18,830.07/x
  3. Step 3: Cross multiply
    31,585.75x = 43,568.69 × 18,830.07
  4. Step 4: Simplify right side
    31,585.75x = 820,401,388.36
  5. Step 5: Solve for x
    x = 820,401,388.36/31,585.75
  6. Step 6: Final answer
    x = 25,973.78

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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.