Home / 28,960.15-43,361.21-21,918.86

Finding the Fourth Proportional to 28,960.15, 43,361.21 and 21,918.86

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Solution

The fourth proportional to 28,960.15, 43,361.21 and 21,918.86 is: 32,818.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,960.15 : 43,361.21 = 21,918.86 : x
  2. Step 2: Convert to fraction form
    28,960.15/43,361.21 = 21,918.86/x
  3. Step 3: Cross multiply
    28,960.15x = 43,361.21 × 21,918.86
  4. Step 4: Simplify right side
    28,960.15x = 950,428,181.83
  5. Step 5: Solve for x
    x = 950,428,181.83/28,960.15
  6. Step 6: Final answer
    x = 32,818.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.