Home / 31,820.57-43,883.04-21,626.87

Finding the Fourth Proportional to 31,820.57, 43,883.04 and 21,626.87

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Solution

The fourth proportional to 31,820.57, 43,883.04 and 21,626.87 is: 29,825.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,820.57 : 43,883.04 = 21,626.87 : x
  2. Step 2: Convert to fraction form
    31,820.57/43,883.04 = 21,626.87/x
  3. Step 3: Cross multiply
    31,820.57x = 43,883.04 × 21,626.87
  4. Step 4: Simplify right side
    31,820.57x = 949,052,500.77
  5. Step 5: Solve for x
    x = 949,052,500.77/31,820.57
  6. Step 6: Final answer
    x = 29,825.13

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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.