Home / 31,707.09-43,755.68-18,278.28

Finding the Fourth Proportional to 31,707.09, 43,755.68 and 18,278.28

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Solution

The fourth proportional to 31,707.09, 43,755.68 and 18,278.28 is: 25,223.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,707.09 : 43,755.68 = 18,278.28 : x
  2. Step 2: Convert to fraction form
    31,707.09/43,755.68 = 18,278.28/x
  3. Step 3: Cross multiply
    31,707.09x = 43,755.68 × 18,278.28
  4. Step 4: Simplify right side
    31,707.09x = 799,778,479.24
  5. Step 5: Solve for x
    x = 799,778,479.24/31,707.09
  6. Step 6: Final answer
    x = 25,223.96

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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.